¿Qué se sabe sobre los infectados por Covid-19 que no presentan sintomas?
(What is known about those infected with covid-19 but are asymptomatic?)
Primeras 5 respuestas:
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Asymptomatic cases are often screened for close contacts both in the clinic and in community,
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Children with COVID-19 were less symptomatic and had more favorable hematological findings than children with SARS.
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The transmissibility of coronavirus from asymptomatic patients to healthy individuals has received enormous attention.
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It is debatable whether asymptomatic COVID-19 virus carriers are contagious.
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The transmissibility of the coronavirus from asymptomatic patients to healthy individuals has received enormous attention.
Asymptomatic cases are often screened for close contacts both in the clinic and in community,
... Asymptomatic cases are often screened for close contacts both in the clinic and in community, such as cohabiting family members of COVID-19 patients or suspected patients or individuals who have exposed to COVID-19 patients within a short distance and relatively long time. Other circumstances include ...
Ref: Asymptomatic cases with SARS‐CoV‐2 infection [J Med Virol, 2020-05-22]Children with COVID-19 were less symptomatic and had more favorable hematological findings than children with SARS.
... negative nasopharyngeal aspirate and the length in hospital stay were similar in COVID-19 patients regardless of whether they were asymptomatic or symptomatic, suggesting a similar duration of viral shedding. Conclusions Children with COVID-19 were less symptomatic and had more favorable hematological findings than children with SARS. ...
Ref: A Comparison Between Chinese Children Infected with COVID-19 and with SARS [J Med Virol, 2020-06-18]The transmissibility of coronavirus from asymptomatic patients to healthy individuals has received enormous attention.
... in December 2019, the coronavirus has spread all over the world at an unprecedented rate. The transmissibility of coronavirus from asymptomatic patients to healthy individuals has received enormous attention. An important study using the COVID-19 data from the city Ningbo, China, was carried out ...
Ref: Comparison of transmissibility of coronavirus between symptomatic and asymptomatic patients: Reanalysis of the Ningbo COVID-19 data. [JMIR public health and surveillance, 2020-05-21]It is debatable whether asymptomatic COVID-19 virus carriers are contagious.
... BACKGROUND: An ongoing outbreak of coronavirus disease 2019 (COVID-19) has spread around the world. It is debatable whether asymptomatic COVID-19 virus carriers are contagious. We report here a case of the asymptomatic patient and present clinical characteristics of 455 contacts, ...
Ref: A study on infectivity of asymptomatic SARS-CoV-2 carriers [Respir Med, 2020]The transmissibility of the coronavirus from asymptomatic patients to healthy individuals has received enormous attention.
... in December 2019, the coronavirus has spread all over the world at an unprecedented rate. The transmissibility of the coronavirus from asymptomatic patients to healthy individuals has received enormous attention. An important study using COVID-19 data from the city of Ningbo, China, was carried out ...
Ref: Comparison of Transmissibility of Coronavirus Between Symptomatic and Asymptomatic Patients: Reanalysis of the Ningbo COVID-19 Data [JMIR Public Health Surveill, 2020]Background Asymptomatic carriers contribute to the spread of Coronavirus Disease 2019 (COVID-19),
... Background Asymptomatic carriers contribute to the spread of Coronavirus Disease 2019 (COVID-19), but their clinical characteristics, viral kinetics, and antibody responses remain unclear. Methods A total of 56 COVID-19 patients without symptoms at admission and 19 age-matched symptomatic patients were enrolled. RNA ...
Ref: Early viral clearance and antibody kinetics of COVID-19 among asymptomatic carriers [JMIR Public Health Surveill, 2020-05-02]The SARS-CoV-2 viral load in upper respiratory specimens is almost as high in asymptomatic infections as symptomatic infections.
... The SARS-CoV-2 viral load in upper respiratory specimens is almost as high in asymptomatic infections as symptomatic infections. 11 Several studies have indicated that asymptomatic and presymptomatic patients can transmit virus to others. [12] [13] [14] A study published in Nature Medicine reported that patients with laboratory-confirmed COVID-19 ...
Ref: Asymptomatic SARS-CoV-2 infections: What do we need to know? [Infection control and hospital epidemiology, 2020-05-06]The prevalence of asymptomatic SARS-CoV-2 infection in healthcare workers with intensive exposure to COVID-19 is unclear.
... The prevalence of asymptomatic SARS-CoV-2 infection in healthcare workers with intensive exposure to COVID-19 is unclear. In this study, we investigated the seroprevalence of SARS-CoV-2 in 797 asymptomatic healthcare workers with intensive exposure to COVID-19 patients in Wuhan, China. Positive IgG was detected from 35 asymptomatic ...
Ref: The prevalence of antibodies to SARS-CoV-2 in asymptomatic healthcare workers with intensive exposure to COVID-19 [Infection control and hospital epidemiology, 2020-06-02]The asymptomatic carrier state of COVID-19 has become a topic of concern for preventing a possible epidemic rebound.
... The asymptomatic carrier state of COVID-19 has become a topic of concern for preventing a possible epidemic rebound. This review describes and defines the COVID-19 asymptomatic carrier state and outlines methods for identifying counting and reporting these cases. The author elaborates that the asymptomatic carrier state can be ...
Ref: [Asymptomatic and pre-symptomatic cases of COVID-19 contribution to spreading the epidemic and need for targeted control strategies]. [Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi, 2020-04-10]Asymptomatic patients infected by SARS‐CoV‐2 have favorable outcomes.
... days (IQR: 4.0‐9.0 days). Patients without any symptoms but with SARS‐CoV‐2 exposure should be closely monitored and tested for SARS‐CoV‐2 both in anal and throat swabs to excluded the infection. Asymptomatic patients infected by SARS‐CoV‐2 have favorable outcomes. ...
Ref: Epidemiological and clinical features of asymptomatic patients with SARS‐CoV‐2 infection [J Med Virol, 2020-05-12]The role of asymptomatic carriers in transmission poses challenges for control of the COVID-19 pandemic.
... The role of asymptomatic carriers in transmission poses challenges for control of the COVID-19 pandemic. Study of asymptomatic transmission and implications for surveillance and disease burden are ongoing, but there has been little study of the implications of asymptomatic transmission on dynamics of disease. We ...
Ref: The time scale of asymptomatic transmission affects estimates of epidemic potential in the COVID-19 outbreak [Epidemics, 2020]This review examines the evidence for asymptomatic or pre-symptomatic carriage of SARS-CoV-2,
... severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the operating room depends on multiple factors. This review examines the evidence for asymptomatic or pre-symptomatic carriage of SARS-CoV-2, the risk of transmission from asymptomatic patients, and the specific risks associated with aerosol-generating procedures. ...
Ref: Patients asymptomatiques du SARS-CoV-2 et transmission du virus : Où en sont nos connaissances?/ Asymptomatic carriage and transmission of SARS-CoV-2: What do we know? [Can. j. anaesth, 2020]As at 20 February, 634 persons on board tested positive for the causative virus.
... 3,711 people underwent a 2-week quarantine after a former passenger was found with COVID-19 post-disembarking. As at 20 February, 634 persons on board tested positive for the causative virus. We conducted statistical modelling to derive the delay-adjusted asymptomatic proportion of infections, along with the ...
Ref: Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020 [Euro Surveill, 2020-03-12]A total of 26 patients with asymptomatic SARS-CoV-2 infection were collected in this study,
... A total of 26 patients with asymptomatic SARS-CoV-2 infection were collected in this study, of whom 16 (61.5%) were men and 10 (38.5%) were women. The median age was 29.5 years (2 to 80 years) and the age of 18 patients (69.2%) ranged from ...
Ref: Epidemiological and clinical characteristics of 26 asymptomatic SARS-CoV-2 carriers [J Infect Dis, 2020-04-22]A growing number of studies have indicated that asymptomatic carriers are infectious to an extent and can potentially transmit COVID-19.
... asymptomatic cases with COVID-19 under medical observation on the Chinese mainland, including 358 imported cases. A growing number of studies have indicated that asymptomatic carriers are infectious to an extent and can potentially transmit COVID-19. At present, China"s measures for managing asymptomatic carriers are 14 days of centralized quarantine and ...
Ref: Asymptomatic carriers of COVID-19 as a concern for disease prevention and control: more testing, more follow-up. [Bioscience trends, 2020-04-22]Asymptomatic infections within a population will inevitably lead to diagnosis via unrelated medical imaging.
... Coronavirus disease 2019 (COVID-19) is an infectious disease with a high asymptomatic incidence. Asymptomatic infections within a population will inevitably lead to diagnosis via unrelated medical imaging. We report the case of an asymptomatic patient undergoing a spine CT examination for trauma who was ...
Ref: Asymptomatic COVID-19: What the Neuroradiologist Needs to Know about Pulmonary Manifestations [AJNR Am J Neuroradiol, 2020]COVID-19 infection could have deleterious effects on cochlear hair cell functions despite being asymptomatic.
... all participants. RESULTS: The high frequency pure-tone thresholds as well as the TEOAE amplitudes were significantly worse in the test group. CONCLUSIONS: COVID-19 infection could have deleterious effects on cochlear hair cell functions despite being asymptomatic. The mechanism of these effects requires further research. ...
Ref: Audiological profile of asymptomatic Covid-19 PCR-positive cases [Am J Otolaryngol, 2020]The incidence of COVID-19, a severe acute respiratory syndrome caused by SARS-CoV-2, is rapidly growing worldwide.
... The incidence of COVID-19, a severe acute respiratory syndrome caused by SARS-CoV-2, is rapidly growing worldwide. In this pandemic period, the chance of incidental pulmonary findings suggestive of COVID-19 at F-FDG PET/CT in asymptomatic oncological patients is not negligible. To suspect COVID-19 is more demanding whether ...
Ref: Atypical Presentation of COVID-19 Incidentally Detected at 18F-FDG PET/CT in an Asymptomatic Oncological Patient [Clin. nucl. med, 2020]BACKGROUND Outbreaks of COVID-19 have been reported in nursing homes and assisted living facilities;
... BACKGROUND Outbreaks of COVID-19 have been reported in nursing homes and assisted living facilities; however, the extent of asymptomatic and pre-symptomatic SARS-CoV-2 infection in this high-risk population remains unclear. METHODS We conducted an investigation of the first known outbreak of SARS-CoV-2 at a skilled ...
Ref: Asymptomatic SARS-CoV-2 infection and COVID-19 mortality during an outbreak investigation in a skilled nursing facility. [Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2020-06-16]This case series examines clinical characteristics of patients with asymptomatic vs symptomatic coronavirus disease 2019 in Wuhan, China.
This case series examines clinical characteristics of patients with asymptomatic vs symptomatic coronavirus disease 2019 in Wuhan, China.
Ref: Comparison of Clinical Characteristics of Patients with Asymptomatic vs Symptomatic Coronavirus Disease 2019 in Wuhan, China [JAMA Netw Open, 2020-05-27]Clusters of HCW infection were discovered on two independent wards.
... compatible with coronavirus disease 2019 (COVID-19) >7 days prior to testing, most self-isolating, returning well. Clusters of HCW infection were discovered on two independent wards. Viral genome sequencing showed that the majority of HCWs had the dominant lineage B∙1. Our ...
Ref: Screening of healthcare workers for SARS-CoV-2 highlights the role of asymptomatic carriage in COVID-19 transmission. [eLife, 2020-05-11]Diagnosis of late pregnancy with asymptomatic COVID-19 infection was made.
... data including laboratory test results and chest computed tomography (CT) scanning were collected and reviewed. Diagnosis of late pregnancy with asymptomatic COVID-19 infection was made. Lumbar anesthesia for cesarean section was performed and a female baby was delivered uneventfully, with ...
Ref: Asymptomatic COVID-19 infection in late pregnancy indicated no vertical transmission [J. med. virol, 2020]Three asymptomatic patients developed postoperative hypoxia, with 2 requiring intubation.
... surgical procedure. Of the 12.1% of patients who tested positive for COVID-19, 58.3% were asymptomatic. Three asymptomatic patients developed postoperative hypoxia, with 2 requiring intubation. The negative predictive value of using the signs and symptoms of disease to predict a ...
Ref: Universal Testing for COVID-19 in Essential Orthopaedic Surgery Reveals a High Percentage of Asymptomatic Infections. [The Journal of bone and joint surgery. American volume, 2020-06-05]More than 70% of our patients with SARS-CoV-2 infection had asymptomatic or mild disease.
More than 70% of our patients with SARS-CoV-2 infection had asymptomatic or mild disease. However, massive increase in case numbers has led to the collapse of health-care systems.
Ref: Clinical characteristics of COVID-19 in 104 people with SARS-CoV-2 infection on the Diamond Princess cruise ship: a retrospective analysis [Lancet Infect Dis, 2020-06-12]The potential infectiousness of asymptomatic COVID-19 cases together with a substantial fraction of asymptomatic infections among all infections, have been highlighted in clinical studies.
... The potential infectiousness of asymptomatic COVID-19 cases together with a substantial fraction of asymptomatic infections among all infections, have been highlighted in clinical studies. We conducted statistical modeling analysis to derive the delay-adjusted asymptomatic proportion of the positive COVID-19 infections onboard the Princess Cruises ship along with the timeline of infections. We estimated the ...
Ref: Estimating the Asymptomatic Proportion of 2019 Novel Coronavirus onboard the Princess Cruises Ship, 2020 [Lancet Infect Dis, 2020-02-23]Of the 213 individuals with COVID-19, 41 (19.2%) were asymptomatic until admission.
... were evaluated through a questionnaire-based survey. Diagnosis of COVID-19 was confirmed by real-time RT-PCR. RESULTS: Of the 213 individuals with COVID-19, 41 (19.2%) were asymptomatic until admission. Among the remaining patients with mild COVID-19, the most common symptom was cough (40.1%; 69/172), ...
Ref: Clinical characteristics of asymptomatic and symptomatic patients with mild COVID-19 [Clin. microbiol. infect, 2020]58 asymptomatic cases with COVID-19 pneumonia admitted to our hospital between Jan 1, 2020 and Feb 23, 2020 were enrolled.
... retrospectively enrolled. The characteristics of CT imaging and clinical feature were collected and analyzed. RESULTS: 58 asymptomatic cases with COVID-19 pneumonia admitted to our hospital between Jan 1, 2020 and Feb 23, 2020 were enrolled. All patients had history of exposure to SARS-CoV-2. On admission, patients had no symptoms and ...
Ref: CT imaging and clinical course of asymptomatic cases with COVID-19 pneumonia at admission in Wuhan, China [J. infect, 2020]Asymptomatic transmission of the coronavirus disease 2019 is an important topic.
... Asymptomatic transmission of the coronavirus disease 2019 is an important topic. A recent study in China showed that transmissibility of the asymptomatic cases is comparable to that of symptomatic cases. Here, we discuss that the conclusion may depend on how we ...
Ref: The relative transmissibility of asymptomatic COVID-19 infections among close contacts [Int J Infect Dis, 2020]A total of 147 asymptomatic carriers of SARS-CoV-2 infection were recruited in this study from Anhui Province.
A total of 147 asymptomatic carriers of SARS-CoV-2 infection were recruited in this study from Anhui Province. All asymptomatic carriers fulfilled all the following criteria:
Ref: The assessment of transmission efficiency and latent infection period on asymptomatic carriers of SARS-CoV-2 infection [Int J Infect Dis, 2020-06-13]We investigated the epidemiological and clinical features of patients infected by SARS-CoV-2 without any symptoms.
... acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infected patients with completely asymptomatic throughout the disease course. We investigated the epidemiological and clinical features of patients infected by SARS-CoV-2 without any symptoms. Patients with confirmed SARS-CoV-2 infection were retrospectively recruited. The demographic characteristics, clinical data, treatment, and ...
Ref: Epidemiological and clinical features of asymptomatic patients with SARS-CoV-2 infection [J. med. virol, 2020]We examined the seroprevalence of SARS-CoV among 674 healthcare workers from a hospital in which a SARS outbreak had occurred.
... Whether severe acute respiratory syndrome–associated coronavirus (SARS-CoV) infection can be asymptomatic is unclear. We examined the seroprevalence of SARS-CoV among 674 healthcare workers from a hospital in which a SARS outbreak had occurred. A total of 353 (52%) experienced mild self-limiting illnesses, and 321 (48%) were asymptomatic throughout the course ...
Ref: Severe Acute Respiratory Syndrome–associated Coronavirus Infection [Emerg Infect Dis, 2003-11-19]We discuss how the presence of a large set of asymptomatic infectives changes our estimate of the COVID-19 basic reproduction number,
We discuss how the presence of a large set of asymptomatic infectives changes our estimate of the COVID-19 basic reproduction number, also known as $R_0$.
Ref: Asymptomatic infectives and $R_0$ for COVID [Emerg Infect Dis, 2020-03-31]From a total of 71 laboratory-confirmed cases, three presymptomatic patients and 10 patients with entirely asymptomatic infections were identified.
... From a total of 71 laboratory-confirmed cases, three presymptomatic patients and 10 patients with entirely asymptomatic infections were identified. In two of the three incubation period patients, the viral titer in the presymptomatic period was very high (Ct value<20). The median number of days to first negative RT-PCR in ...
Ref: Viral kinetics of SARS-CoV-2 in asymptomatic carriers and presymptomatic patients [Int J Infect Dis, 2020]COVID-19 is diagnosed according to the WHO Interim Guidelines 6 .
... Chongqing Public Health Medical Center from January 2020 to March 2020 were collected. COVID-19 is diagnosed according to the WHO Interim Guidelines 6 . The severity of COVID -19 was defined according to the American Thoracic Society"s Community Acquired Pneumonia Guidelines ...
Ref: High incidence of asymptomatic SARS-CoV-2 infection, Chongqing, China [Int J Infect Dis, 2020-03-23]In some cases, the disease progresses to a severe acute respiratory syndrome, pneumonia, multi-organ failure, and death [4] .
... or develop into flu-like symptoms, including fever, cough, and shortness of breath [2, 3] . In some cases, the disease progresses to a severe acute respiratory syndrome, pneumonia, multi-organ failure, and death [4] . The virus spreads mainly via respiratory droplets from coughs and sneezes [5] . The standard ...
Ref: The COVID-19 infection: lessons from the Italian experience [J Public Health Policy, 2020-05-29]Among the 139 patients with COVID-19 who were hospitalized, 10 (7.2%) were asymptomatic.
... investigated patients with a confirmed diagnosis of COVID-19 but who did not show any symptoms. Among the 139 patients with COVID-19 who were hospitalized, 10 (7.2%) were asymptomatic. Their chest CT and radiographic findings were analyzed. Results: In the results, all patients (100%) ...
Ref: Chest Computed Tomography Findings in Asymptomatic Patients with COVID-19 [J Public Health Policy, 2020-05-15]The severity of COVID -19 was defined according to the American Thoracic Society's Community Acquired Pneumonia Guidelines 7 .
... March 2020 were collected. COVID-19 is diagnosed according to the WHO Interim Guidelines 6 . The severity of COVID -19 was defined according to the American Thoracic Society"s Community Acquired Pneumonia Guidelines 7 . A confirmed case of SARS-CoV-2 infection was defined as a positive result on RT-PCR assay ...
Ref: High incidence of asymptomatic SARS-CoV-2 infection, Chongqing, China [J Public Health Policy, 2020-03-23]By undertaking chest CT, the clinician could identify asymptomatic patients with abnormal chest CT Fig. 2 .
... screening, which includes the assessment of their close contacts with COVID-19 patients or COVID-19-suspected patients. By undertaking chest CT, the clinician could identify asymptomatic patients with abnormal chest CT Fig. 2 . Symptoms and maximum body temperatures of a 64-year-old woman infected with severe acute respiratory syndrome ...
Ref: cord_uid 3e0bhyfk Persistence of positive severe acute respirato... 3e0bhyfk Persistence of Positive SARS‐CoV‐2 RT‐PCR Test... Name: title, dtype: object [J Public Health Policy, cord_uid 3e0bhyfk 2020 3e0bhyfk 2020-05-18 Name: publish_time, dtype: object]Identification and isolation of asymptomatic patients is essential to control virus outbreaks.
... At present, cases of COVID-19 continue to occur around the world, so the rate of asymptomatic infections cannot be accurately determined. Identification and isolation of asymptomatic patients is essential to control virus outbreaks. ...
Ref: Transmission and clinical characteristics of asymptomatic patients with SARS-CoV-2 infection [J Public Health Policy, 2020-06-12]A convenience sample of 32 asymptomatic health-care personnel contacts were also tested.
... fever, cough, or shortness of breath became persons under investigation and were tested for SARS-CoV-2. A convenience sample of 32 asymptomatic health-care personnel contacts were also tested. FINDINGS: Patient 1-a woman in her 60s-returned from China in mid-January, 2020. One week later, ...
Ref: First known person-to-person transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the USA [Lancet, 2020]He then demonstrated symptoms of conjunctivitis in his left lower eyelid 2 days before the onset of COVID-19.
... member of the National Health Commission of the People"s Republic of China (NHC) expert panel on pneumonia, was exposed to a fever clinic in Wuhan with only his eyes unprotected. He then demonstrated symptoms of conjunctivitis in his left lower eyelid 2 days before the onset of COVID-19. ...
Ref: The transmission and diagnosis of 2019 novel coronavirus infection disease (COVID‐19): A Chinese perspective [J Med Virol, 2020-03-12]Asymptomatic infected individuals, called 'asymptomatic carrier or transmitter', may also become the contagious source of SARS-CoV-2,
... are fever, dry cough, fatigue, sputum production, shortness of breath, and sore throat [6] . Asymptomatic infected individuals, called "asymptomatic carrier or transmitter", may also become the contagious source of SARS-CoV-2, and some of them progress rapidly, even resulting in acute respiratory distress syndrome (ARDS) with ...
Ref: CT imaging and clinical course of asymptomatic cases with COVID-19 pneumonia at admission in Wuhan, China [J Infect, 2020-04-12]Abstract Asymptomatic transmission of the coronavirus disease 2019 is an important topic.
... Abstract Asymptomatic transmission of the coronavirus disease 2019 is an important topic. A recent study in China showed that transmissibility of the asymptomatic cases is comparable to that of symptomatic cases. Here we showed that the conclusion may depend on how we ...
Ref: The relative transmissibility of asymptomatic cases among close contacts [Int J Infect Dis, 2020-04-18]However, asymptomatic carriers intensified the difficulty of prevention and management.
... At present, Coronavirus Disease 2019 (COVID-19) is rampaging around the world. However, asymptomatic carriers intensified the difficulty of prevention and management. Here we reported the screening, clinical feathers, and treatment process of a family cluster involving three COVID-19 patients. The ...
Ref: Alert for non-respiratory symptoms of Coronavirus Disease 2019 (COVID-19) patients in epidemic period: A case report of familial cluster with three asymptomatic COVID-19 patients [J. med. virol, 2020]Studies have shown that asymptomatic infections are more common in populations of young and middle-aged individuals with functional performance status without underlying diseases.
... Different individuals may have different clinical signs. Studies have shown that asymptomatic infections are more common in populations of young and middle-aged individuals with functional performance status without underlying diseases. It was reported that asymptomatic cases were more common in middle-aged people in Shenzhen (median age:49 years, 30.9% between 30 and 49 years) ...
Ref: A systematic review of asymptomatic infections with COVID-19 [J Microbiol Immunol Infect, 2020-05-15]The asymptomatic carriers seldom occurred among young people (aged 18-29 years) who had close contact with infected family members.
... laboratory confirmed to be positive for SARS-CoV-2 through nucleic acid testing of pharyngeal swab samples. The asymptomatic carriers seldom occurred among young people (aged 18-29 years) who had close contact with infected family members. In the majority of patients, the outcome was mild or ordinary 2019 novel coronavirus disease ...
Ref: Clinical Outcomes in 55 Patients With Severe Acute Respiratory Syndrome Coronavirus 2 Who Were Asymptomatic at Hospital Admission in Shenzhen, China [J Infect Dis, 2020]Case 3 did not develop any symptoms until February 6, 2020, with an asymptomatic period of 15 days.
... returned from Wuhan on January 22. Both case 1 and case 2 got mild symptoms. Case 3 did not develop any symptoms until February 6, 2020, with an asymptomatic period of 15 days. She was transferred to ICU and administered multiple treatment according to the disease progression and ...
Ref: A SARS-CoV-2 familial cluster infection reveals asymptomatic transmission to children [J Infect Public Health, 2020]Recent epidemiologic, virologic, and modeling reports support the possibility of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission
... Recent epidemiologic, virologic, and modeling reports support the possibility of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission from persons who are presymptomatic (SARS-CoV-2 detected before symptom onset) or asymptomatic (SARS-CoV-2 detected but symptoms never develop). SARS-CoV-2 transmission in the absence of symptoms reinforces the value of measures ...
Ref: Evidence Supporting Transmission of Severe Acute Respiratory Syndrome Coronavirus 2 While Presymptomatic or Asymptomatic. [Emerging infectious diseases, 2020-05-04]17 Residents of a long-term skilled nursing facility with an early outbreak of COVID-19 were all screened for symptoms of illness and viral RNA.
... for SARS-CoV-2, 17.9% of those who tested positive were asymptomatic (95% CI, 15.5 to 20.2). 17 Residents of a long-term skilled nursing facility with an early outbreak of COVID-19 were all screened for symptoms of illness and viral RNA. Of the 76/82 (93%) residents tested, 23 tested positive of which 13 (57%) were categorized ...
Ref: Asymptomatic carriage and transmission of SARS-CoV-2: What do we know? [Can J Anaesth, 2020-06-02]Pregnant women were divided into two groups based on status at admission, symptomatic or asymptomatic.
... 2019 (COVID-19). STUDY DESIGN: This is a retrospective cohort study of pregnant women with COVID-19. Pregnant women were divided into two groups based on status at admission, symptomatic or asymptomatic. All testing was done by nasopharyngeal swab using polymerase chain reaction (PCR) for severe acute ...
Ref: The Relationship between Status at Presentation and Outcomes among Pregnant Women with COVID-19 [Am. j. perinatol, 2020]Among patients with COVID-19 infection, 58% of their support persons also had infection;
... among patients and support persons, respectively. The rate of discordance among tested pairs was 7.5%. Among patients with COVID-19 infection, 58% of their support persons also had infection; in patients without infection, fewer than 3.0% of their support persons had infection. CONCLUSION We ...
Ref: Testing of Patients and Support Persons for Coronavirus Disease 2019 (COVID-19) Infection Before Scheduled Deliveries. [Obstetrics and gynecology, 2020-05-19]uncontrolled humanto-human transmission has resulted in exponential infection rate and numerous loss of lives even with this lockdown measures.
... be infected have been instituted with immediate effect; however, due to individuals that are asymptomatic, uncontrolled humanto-human transmission has resulted in exponential infection rate and numerous loss of lives even with this lockdown measures. This review article summarizes the developing situation surrounding the SARS-CoV-2 pandemic with respect to its ...
Ref: Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2): Emergence, History, Basic and Clinical Aspects [Saudi J Biol Sci, 2020-04-23]This study included 31 adult patients who were virologically confirmed to have COVID-19 but were asymptomatic on admission.
... viral shedding patterns, and potential infectivity of asymptomatic patients (APs) with coronavirus disease 2019 (COVID-19). This study included 31 adult patients who were virologically confirmed to have COVID-19 but were asymptomatic on admission. Among these 31 patients, 22 presented symptoms after admission and were defined as asymptomatic patients ...
Ref: Viral dynamics in asymptomatic patients with COVID-19 [Int J Infect Dis, 2020]The initial case was the infection source who infected 29 second generation cases and 4 asymptomatic infection cases,
... cases and 15 asymptomatic infection cases related with the 1.19 rally were reported in Ningbo. The initial case was the infection source who infected 29 second generation cases and 4 asymptomatic infection cases, in whom 23 second generation cases and 3 asymptomatic infection cases once took bus with ...
Ref: [Investigation of a cluster epidemic of COVID-19 in Ningbo]. [Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi, 2020-05-13]An asymptomatic case was defined as a laboratory-confirmed COVID-19 infection case who was afebrile and well.
... first hospital admission and verified by the Beijing Center for Disease Control and Prevention (CDC). An asymptomatic case was defined as a laboratory-confirmed COVID-19 infection case who was afebrile and well. We enrolled the family that had five patients in total with COVID-19 infection who were ...
Ref: Familial cluster of COVID-19 infection from an asymptomatic [Crit Care, 2020-03-27]There are few reports about asymptomatic contacts of infected patients identified as positive for SARS-CoV-2 through screening.
... coronavirus 2 (SARS-CoV-2) infection has spread unexpectedly in Wuhan, Hubei Province, China, since December 2019. There are few reports about asymptomatic contacts of infected patients identified as positive for SARS-CoV-2 through screening. We studied the epidemiological and clinical outcomes in 55 asymptomatic carriers who were laboratory confirmed ...
Ref: Clinical Outcomes in 55 Patients With Severe Acute Respiratory Syndrome Coronavirus 2 Who Were Asymptomatic at Hospital Admission in Shenzhen, China [J Infect Dis, 2020]These infected cases resulted in 2147 close contacts with them, among which 2001 exposures were caused by the symptomatic cases and 146 by the asymptomatic cases.
... were 157 symptomatic cases and 30 asymptomatic cases in the Ningbo Covid-19 data 1 . These infected cases resulted in 2147 close contacts with them, among which 2001 exposures were caused by the symptomatic cases and 146 by the asymptomatic cases. The average number of close contacts by the symptomatic cases is 13 and that by ...
Ref: Comparison of transmissibility of coronavirus between symptomatic and asymptomatic patients: Reanalysis of the Ningbo Covid-19 data [J Infect Dis, 2020-04-07]an asymptomatic child was found to have ground-glass opacities in his lung and SARS-CoV-2 RNA in his sputum sample.
... abnormalities seen in older patients. Generally, COVID-19 appears to be less severe than SARS. Third, an asymptomatic child was found to have ground-glass opacities in his lung and SARS-CoV-2 RNA in his sputum sample. This finding of asymptomatic virus shedding raises the possibility for transmission of SARS-CoV-2 from asymptomatic ...
Ref: SARS-CoV-2 and COVID-19: The most important research questions [Cell Biosci, 2020-03-16]Bronchial thickening and ground-glass opacities were the main radiologic features, and these findings were also reported in asymptomatic patients.
... reported to have mild respiratory symptoms, namely fever, dry cough, and fatigue, or were asymptomatic. Bronchial thickening and ground-glass opacities were the main radiologic features, and these findings were also reported in asymptomatic patients. Among the included articles, there was only 1 case of severe COVID-19 infection, which occurred ...
Ref: Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection in Children and Adolescents: A Systematic Review. [JAMA pediatrics, 2020-04-22]The viral load from asymptomatic infection was reportedly similar to symptomatic patients in both SARS-CoV-2 and norovirus.
... addition to viral load from symptomatic patients, wastewater receives viruses shed from asymptomatically infected people. The viral load from asymptomatic infection was reportedly similar to symptomatic patients in both SARS-CoV-2 and norovirus. The estimated ratio of asymptomatic infection of SARS-CoV-2 is as high as that of norovirus: ...
Ref: Potential Sensitivity of Wastewater Monitoring for SARS-CoV-2: Comparison with Norovirus Cases [Environ Sci Technol, 2020-05-18]BACKGROUND Little is known about the natural history of asymptomatic SARS-CoV-2 infection or its contribution to infection transmission.
... BACKGROUND Little is known about the natural history of asymptomatic SARS-CoV-2 infection or its contribution to infection transmission. METHODS We conducted a prospective study at a quarantine center for COVID-19 in Ho Chi Minh City, Vietnam. We enrolled quarantined people with RT-PCR-confirmed SARS-CoV-2 infection, collecting clinical data, travel ...
Ref: The natural history and transmission potential of asymptomatic SARS-CoV-2 infection. [Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2020-06-04]The disease can spread easily by the contact process between individuals.
... In the COVID-19, the reproduction number is bigger than one. The disease can spread easily by the contact process between individuals. The double time is given by = We calculate the recovering rate obtained by the data set. The recovering rate ...
Ref: Estimation of Infection Rate and Prediction of Initial Infected Individuals of COVID-19 [Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2020-04-27]We found no statistically significant difference in the viral load (as measured by genome equivalents inferred from cycle threshold data) of symptomatic versus asymptomatic infections
... the two surveys were asymptomatic. The mean serial interval was 6.9 days (95% CI 2.6-13.4). We found no statistically significant difference in the viral load (as measured by genome equivalents inferred from cycle threshold data) of symptomatic versus asymptomatic infections (p-values 0.6 and 0.2 for E and RdRp genes, respectively, Exact Wilcoxon-Mann-Whitney test). Contact tracing ...
Ref: Suppression of COVID-19 outbreak in the municipality of Vo, Italy [Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2020-04-18]The early peak suggests transmission is likely to occur early in the disease course when the patient may be asymptomatic or only have mild symptoms.
... course of COVID-19 than is observed in SARS, where peak was around day 10 (16). The early peak suggests transmission is likely to occur early in the disease course when the patient may be asymptomatic or only have mild symptoms. A pre-print study supports this hypothesis with the finding of a higher rate of infection ...
Ref: SARS-CoV-2: the viral shedding vs infectivity dilemma [Infect Dis Health, 2020-05-20]Among these 31 patients, 22 presented symptoms after admission and were defined as asymptomatic patients in the incubation period (APIs);
... 31 adult patients who were virologically confirmed to have COVID-19 but were asymptomatic on admission. Among these 31 patients, 22 presented symptoms after admission and were defined as asymptomatic patients in the incubation period (APIs); the other nine patients remained asymptomatic during hospitalization and were defined as asymptomatic patients (APs). ...
Ref: Viral dynamics in asymptomatic patients with COVID-19 [Int J Infect Dis, 2020]We enrolled quarantined people with RT-PCR-confirmed SARS-CoV-2 infection,
... a prospective study at a quarantine centre for COVID-19 in Ho Chi Minh City, Vietnam. We enrolled quarantined people with RT-PCR-confirmed SARS-CoV-2 infection, collecting clinical data, travel and contact history, and saliva at enrolment and daily nasopharyngeal throat ...
Ref: The natural history and transmission potential of asymptomatic SARS-CoV-2 infection [Int J Infect Dis, 2020-04-29]We investigated the epidemiological and clinical features of patients infected by SARS‐CoV‐2 without any symptoms.
... acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) infected patients with completely asymptomatic throughout the disease course. We investigated the epidemiological and clinical features of patients infected by SARS‐CoV‐2 without any symptoms. Patients with confirmed SARS‐CoV‐2 infection were retrospectively recruited. The demographic characteristics, clinical data, treatment, and ...
Ref: Epidemiological and clinical features of asymptomatic patients with SARS‐CoV‐2 infection [J Med Virol, 2020-05-12]Close contacts are isolated and monitored at home or at designated hotels, and more and more asymptomatic cases were found.
... 11 January 2020, Shenzhen has become one of the main epidemic areas for this disease. Close contacts are isolated and monitored at home or at designated hotels, and more and more asymptomatic cases were found. We reviewed findings in asymptomatic cases that were laboratory confirmed to be positive for SARS-CoV-2 ...
Ref: Clinical Outcomes in 55 Patients With Severe Acute Respiratory Syndrome Coronavirus 2 Who Were Asymptomatic at Hospital Admission in Shenzhen, China [J Infect Dis, 2020-03-17]Critical knowledge gaps include the relative incidence of asymptomatic and symptomatic SARS-CoV-2 infection,
... the spread of SARS-CoV-2 by infected persons who may not exhibit illness despite being infectious. Critical knowledge gaps include the relative incidence of asymptomatic and symptomatic SARS-CoV-2 infection, the public health interventions that prevent asymptomatic transmission, and the question of whether asymptomatic SARS-CoV-2 ...
Ref: Evidence Supporting Transmission of Severe Acute Respiratory Syndrome Coronavirus 2 While Presymptomatic or Asymptomatic [Emerg. infect. dis, 2020]RESULTS: 58 asymptomatic cases with COVID-19 pneumonia admitted to our hospital between Jan 1, 2020 and Feb 23, 2020 were enrolled.
... were retrospectively enrolled. The characteristics of CT imaging and clinical feature were collected and analyzed. RESULTS: 58 asymptomatic cases with COVID-19 pneumonia admitted to our hospital between Jan 1, 2020 and Feb 23, 2020 were enrolled. All patients had history of exposure to SARS-CoV-2. On admission, patients had no symptoms and ...
Ref: CT imaging and clinical course of asymptomatic cases with COVID-19 pneumonia at admission in Wuhan, China [J. infect, 2020]Asymptomatic carriers were defined as individuals who were positive for COVID-19 nucleic acid but without any symptoms during screening of close contacts.
... severity was defined according to the Chinese management guideline for COVID-19 (version 6.0) [6] . Asymptomatic carriers were defined as individuals who were positive for COVID-19 nucleic acid but without any symptoms during screening of close contacts. This study was approved by ethics committee of each medical centre, and information consent was ...
Ref: Different longitudinal patterns of nucleic acid and serology testing results based on disease severity of COVID-19 patients [Emerg Microbes Infect, 2020-05-02]Few studies reported the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infected patients with completely asymptomatic throughout the disease course.
... Few studies reported the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infected patients with completely asymptomatic throughout the disease course. We investigated the epidemiological and clinical features of patients infected by SARS-CoV-2 without any symptoms. Patients with confirmed SARS-CoV-2 infection were retrospectively recruited. The demographic characteristics, clinical data, treatment, and ...
Ref: Epidemiological and clinical features of asymptomatic patients with SARS-CoV-2 infection [J. med. virol, 2020]Specific information that characterizes asymptomatic patients remains unknown.
... Specific information that characterizes asymptomatic patients remains unknown. As reported by the previous study, fever as one of the dominant symptoms of COVID-19 was identified in only 43.8% of the patients on presentation, while 88.7% of patients developed ...
Ref: Epidemiological and clinical features of asymptomatic patients with SARS‐CoV‐2 infection [J Med Virol, 2020-05-12]Data on clinical outcomes are scarce but include several reports of asymptomatic infection and a milder course of disease in young children, though radiological abnormalities are noted.
... studies. Limited data on attack rate indicate that children are just as susceptible to infection. Data on clinical outcomes are scarce but include several reports of asymptomatic infection and a milder course of disease in young children, though radiological abnormalities are noted. Severe cases are not reported in detail and there are little data relating to transmission. ...
Ref: SARS-CoV-2 (COVID-19): What do we know about children? A systematic review [Clin. infect. dis, 2020]60% of asymptomatic cases demonstrated findings of pneumonia on the initial chest CT, including well-recognized features of coronavirus disease-19.
... (P < 0.001). 27.4% of well-documented asymptomatic cases developed delayed symptoms after the pathogenic diagnosis. 60% of asymptomatic cases demonstrated findings of pneumonia on the initial chest CT, including well-recognized features of coronavirus disease-19. None of the asymptomatic individuals died. Two elderly individuals with initially asymptomatic infection developed severe ...
Ref: Comparison of clinical and epidemiological characteristics of asymptomatic and symptomatic SARS-CoV-2 infection: A multi-center study in Sichuan Province, China. [Travel medicine and infectious disease, 2020-05-31]While our knowledge about carriers and their virus shedding is deficient, some studies modelling the viral transmission have considered the potential contribution of the asymptomatic carriers.
... to SARS-CoV-2. Besides hospitalized cases, many individuals are likely asymptomatic but potentially carry the virus. While our knowledge about carriers and their virus shedding is deficient, some studies modelling the viral transmission have considered the potential contribution of the asymptomatic carriers. Protocols for managing asymptomatic cases, for example for controlling them to restrict their contact with ...
Ref: Challenges of managing the asymptomatic carriers of SARS-CoV-2 [Travel Med Infect Dis, 2020]an 8-year-old girl (Patient 1) did not show any clinical symptoms, abnormal chest CT image findings or a decreased lymphocyte count.
... but negative in nasopharyngeal swabs for such a long period (42 days). In this case, an 8-year-old girl (Patient 1) did not show any clinical symptoms, abnormal chest CT image findings or a decreased lymphocyte count. Moreover, she was identified as asymptomatic case on Feb 19 and until now she did ...
Ref: Asymptomatic SARS‐CoV‐2 infected case with viral detection positive in stool but negative in nasopharyngeal samples lasts for 42 days [J Med Virol, 2020-04-24]one of the most difficult problems in trying to control the ongoing COVID-19 epidemic is the presence of a large cohort of asymptomatic infectives.
... There is increasing evidence that one of the most difficult problems in trying to control the ongoing COVID-19 epidemic is the presence of a large cohort of asymptomatic infectives. We develop a SIR-type model taking into account the presence of asymptomatic, or however undetected, infective, and the substantially long time these spend being infective ...
Ref: A simple SIR model with a large set of asymptomatic infectives [J Med Virol, 2020-03-19]Among COVID-19 facing HCWs, SARS-CoV-2 positivity was similar for all job categories (p = 0.74).
... (CI: 4.5 - 6.5) were positive, whereas 0.6% (CI: 0.2 - 1.7%) of non COVID-19 facing HCWs and none of the non-clinical HCWs or CRs were positive (Ptrend < 0.001). Among COVID-19 facing HCWs, SARS-CoV-2 positivity was similar for all job categories (p = 0.74). ...
Ref: Prevalence of SARS-CoV-2 infection among asymptomatic healthcare workers in greater Houston: a cross-sectional analysis of surveillance data from a large healthcare system [J Med Virol, 2020-05-25]Evidence is accumulating on the existence of many asymptomatic or and cases who had not yet developed symptoms at the time of data collection but became symptomatic later.
... Evidence is accumulating on the existence of many asymptomatic or and cases who had not yet developed symptoms at the time of data collection but became symptomatic later. As predicted using a statistical model, the estimated total number of true asymptomatic cases was at 113.3 and the estimated asymptomatic proportion (among all infected cases) was 17.9%. Another study ...
Ref: Asymptomatic cases with SARS‐CoV‐2 infection [J Med Virol, 2020-05-22]Virus was also detected in 2 of 62 staff (3.2%); both were symptomatic.
... 1 male resident reported resolved cough and 1 loose stool during the preceding 14 days. Virus was also detected in 2 of 62 staff (3.2%); both were symptomatic. One week later, resident SARS-CoV-2 testing was repeated and 1 new infection detected (asymptomatic). All ...
Ref: Outbreak Investigation of COVID-19 Among Residents and Staff of an Independent and Assisted Living Community for Older Adults in Seattle, Washington. [JAMA internal medicine, 2020-05-21]ACORN is a cross-sectional community-based observational study of adult residents presenting asymptomatic for COVID-like illness,
... testing positive for the development of symptoms, and to understand duration of positive test results. ACORN is a cross-sectional community-based observational study of adult residents presenting asymptomatic for COVID-like illness, defined as the self-reported absence of the following 3-symptoms in the last 7-days: fever (≥100°F), ...
Ref: A cross-sectional community-based observational study of asymptomatic SARS-CoV-2 prevalence in the greater Indianapolis area. [Journal of medical virology, 2020-06-16]COVID-19 patients experienced fewer symptoms than SARS patients.
... children infected with COVID-19 and SARS in representative paediatric cohorts from Wuhan and Hong Kong. COVID-19 patients experienced fewer symptoms than SARS patients. Almost all SARS patients presented with fever compared with only half of COVID-19 patients, which ...
Ref: A Comparison Between Chinese Children Infected with COVID-19 and with SARS [Journal of medical virology, 2020-06-18]Up to 80% of active SARS-CoV-2 infections are proposed to be asymptomatic based on cross-sectional studies.
... Background: Up to 80% of active SARS-CoV-2 infections are proposed to be asymptomatic based on cross-sectional studies. However, accurate estimates of the asymptomatic proportion require systematic detection and follow-up to differentiate between truly asymptomatic and pre-symptomatic cases. We conducted a rapid review and meta-analysis of current ...
Ref: A Rapid Review of the Asymptomatic Proportion of PCR-Confirmed SARS-CoV-2 Infections in Community Settings [Journal of medical virology, 2020-05-23]Dry cough, fever, lymphopenia, malaise, diarrhea, and dyspnea are the predominant signs and symptoms of COVID-19.
... Dry cough, fever, lymphopenia, malaise, diarrhea, and dyspnea are the predominant signs and symptoms of COVID-19. The primary symptoms may last up to 14 days after exposure, and the incubation period ranges 9-12 days. Untreated disease may result in alveolar damage and pneumonia, mostly culminating in ...
Ref: Challenges of managing the asymptomatic carriers of SARS-CoV-2 [Travel Med Infect Dis, 2020-04-18]A typical symptomatic case of the novel coronavirus disease (COVID-19) includes fever, muscle soreness, and cough 1 .
... A typical symptomatic case of the novel coronavirus disease (COVID-19) includes fever, muscle soreness, and cough 1 . However, there is another pattern of cases that do not exhibit typical clinical symptoms, referred to as asymptomatic. At least one case of COVID-19 has been reported without presentation of ...
Ref: The clinical feature of silent infections of novel coronavirus infection (COVID‐19) in Wenzhou [J Med Virol, 2020-04-10]18 (69.2%, 18/26) asymptomatic COVID-19 infections were no imaging changes,
... 7 days (interquartile range, 1-15 days) (p=0.27). On the initial chest computerized tomography (CT) check, 18 (69.2%, 18/26) asymptomatic COVID-19 infections were no imaging changes, which was of no significance compared with 12 (46.2%, 12/26) patients with moderate type of ...
Ref: Asymptomatic COVID-19 Have Longer Treatment Cycle Than Moderate Type of Confirmed Patients [J Med Virol, 2020-05-20]leading to under-recognition of the related disease, COVID-19, and to incidental findings in nuclear imaging procedures performed for standard clinical indications.
... Infection with the novel coronavirus SARS-CoV-2 may remain asymptomatic, leading to under-recognition of the related disease, COVID-19, and to incidental findings in nuclear imaging procedures performed for standard clinical indications. Here, we report about our local experience in a region with high COVID-19 prevalence and dynamically increasing infection rates. Methods: Within ...
Ref: INCIDENTAL FINDINGS SUGGESTIVE OF COVID-19 IN ASYMPTOMATIC PATIENTS UNDERGOING NUCLEAR MEDICINE PROCEDURES IN A HIGH PREVALENCE REGION. [Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 2020-04-01]Five of 7 patients had subsequent proof of COVID-19 by reverse-transcriptase polymerase chain reaction.
... 12 patients who received radioiodine for differentiated thyroid carcinoma also showed interstitial pneumonia on SPECT/CT. Five of 7 patients had subsequent proof of COVID-19 by reverse-transcriptase polymerase chain reaction. The remaining 2 patients were not tested immediately but underwent quarantine and careful monitoring. Conclusion: ...
Ref: Incidental Findings Suggestive of COVID-19 in Asymptomatic Patients Undergoing Nuclear Medicine Procedures in a High-Prevalence Region [J Nucl Med, 2020]Since asymptomatic infections as “covert transmitter”, and some patients can progress rapidly in the short term.
... patients (28.60±7.55 day). CONCLUSION: CT imaging of asymptomatic cases with COVID-19 pneumonia has definite characteristics. Since asymptomatic infections as “covert transmitter”, and some patients can progress rapidly in the short term. It is essential to pay attention to the surveillance of asymptomatic patients with COVID-19. CT ...
Ref: CT imaging and clinical course of asymptomatic cases with COVID-19 pneumonia at admission in Wuhan, China [J Infect, 2020-04-12]Among these residents, eight developed symptoms 1-5 days after specimen collection and were later classified as presymptomatic; one of these patients died.
... 23. Fourteen of the 19 residents with COVID-19 were asymptomatic at the time of testing. Among these residents, eight developed symptoms 1-5 days after specimen collection and were later classified as presymptomatic; one of these patients died. This report describes an outbreak of COVID-19 in an SNF, with case identification accomplished by ...
Ref: Universal and Serial Laboratory Testing for SARS-CoV-2 at a Long-Term Care Skilled Nursing Facility for Veterans — Los Angeles, California, 2020 [MMWR Morb Mortal Wkly Rep, 2020-05-29]None of the patients reported acute, chronic or seasonal upper airway disease before infection,
... people" before they were screened because of close contact with a lab-confirmed case of Covid-19. None of the patients reported acute, chronic or seasonal upper airway disease before infection, in one case a four-day fever was present after the onset of hyposmia; two patients ...
Ref: Sudden hyposmia as a prevalent symptom of COVID-19 infection. [MMWR Morb Mortal Wkly Rep, 2020-04-07]Among the 8 patients, 1 adult and a 13-month-old infant were asymptomatic, and 1 adult was diagnosed as having severe pneumonia.
... cluster of coronavirus disease 2019 (COVID-19) caused by a presymptomatic case. There were 9 family members, including 8 laboratory-confirmed with COVID-19, and a 6-year-old child had no evidence of infection. Among the 8 patients, 1 adult and a 13-month-old infant were asymptomatic, and 1 adult was diagnosed as having severe pneumonia. ...
Ref: COVID-19 Transmission Within a Family Cluster by Presymptomatic Carriers in China [Clin Infect Dis, 2020-03-23]A total of 47 patients with confirmed COVID-19 were recruited. Among them, 11 patients were categorized as asymptomatic cases.
... we describe the characteristics of asymptomatic patients with SARS-CoV-2 infection in Jinan, Shandong province, China. A total of 47 patients with confirmed COVID-19 were recruited. Among them, 11 patients were categorized as asymptomatic cases. We found that the asymptomatic patients in Jinan were relatively young and were mainly clustered ...
Ref: Characteristics of asymptomatic patients with SARS-CoV-2 infection in Jinan, China [Microbes Infect, 2020-05-07]This case series examines clinical characteristics of patients with asymptomatic vs symptomatic coronavirus disease 2019
This case series examines clinical characteristics of patients with asymptomatic vs symptomatic coronavirus disease 2019 in Wuhan, China.
Ref: Comparison of Clinical Characteristics of Patients with Asymptomatic vs Symptomatic Coronavirus Disease 2019 in Wuhan, China [JAMA Netw Open, 2020-05-27]The prevalence of asymptomatic SARS-CoV-2 infection, however, has remained uncertain.
... persons has been equal to that of symptomatic persons, suggesting similar potential for viral transmission. The prevalence of asymptomatic SARS-CoV-2 infection, however, has remained uncertain. We sought to review and synthesize the available evidence on testing for SARS-CoV-2 infection, carried ...
Ref: Prevalence of Asymptomatic SARS-CoV-2 Infection: A Narrative Review [Ann Intern Med, 2020-06-03]Current evidence on how long to quarantine asymptomatic carriers is limited.
... presymptomatic period can be infectious (Bai et al., 2020 , Mao et al., 2020 . Current evidence on how long to quarantine asymptomatic carriers is limited. In recent paper, Mao was suspicious about the 14-day isolation period for asymptomatic carriers because ...
Ref: Viral kinetics of SARS-CoV-2 in asymptomatic carriers and presymptomatic patients [Int J Infect Dis, 2020-05-04]In close contact, H was asymptomatic, PCR test was negative and asymptomatic, and he was discharged early.
... asymptomatic, diagnosed on January 31; Patient G was asymptomatic and was diagnosed on January 31. In close contact, H was asymptomatic, PCR test was negative and asymptomatic, and he was discharged early. Among the 7 patients, 1 case died of (B) aggravation, and the other patients" condition ...
Ref: [Analysis of the first cluster of cases in a family of novel coronavirus pneumonia in Gansu Province] [Zhonghua Yu Fang Yi Xue Za Zhi, 2020]These infected cases resulted in 2147 close contacts with them,
... were 157 symptomatic cases and 30 asymptomatic cases in the Ningbo Covid-19 data 1 . These infected cases resulted in 2147 close contacts with them, among which 2001 exposures were caused by the symptomatic cases and 146 by the asymptomatic ...
Ref: Comparison of transmissibility of coronavirus between symptomatic and asymptomatic patients: Reanalysis of the Ningbo Covid-19 data [Zhonghua Yu Fang Yi Xue Za Zhi, 2020-04-07]None of the 24 cases developed severe COVID-19 pneumonia or died.
... during hospitalization. These 7 cases were younger (median age: 14.0 years; P=0.012) than the rest. None of the 24 cases developed severe COVID-19 pneumonia or died. The median communicable period, defined as the interval from the first day of positive nucleic ...
Ref: Clinical characteristics of 24 asymptomatic infections with COVID-19 screened among close contacts in Nanjing, China [Sci China Life Sci, 2020]