tetano
Editor, Senior Moderator
J Med Virol
. 2021 Feb 4.
doi: 10.1002/jmv.26847. Online ahead of print.
Infection and disease spectrum in individuals with household exposure to SARS-CoV-2: A family cluster cohort study
Wen Xie[SUP] 1 [/SUP], Zhihai Chen[SUP] 2 [/SUP], Qi Wang[SUP] 1 [/SUP], Meihua Song[SUP] 2 [/SUP], Ying Cao[SUP] 1 [/SUP], Lin Wang[SUP] 2 [/SUP], Calvin Q Pan[SUP] 1 [/SUP]
Affiliations
Abstract
Objectives: We primarily quantified exposure patterns, transmission characteristics, and the clinical spectrum of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among household contacts of individuals with severe coronavirus disease (COVID-19).
Methods: We conducted a retrospective cohort study of 20 index patients hospitalized with severe COVID-19 and 79 of their household contacts. We determined the transmission frequency, range of manifestations of SARS-CoV-2 infection, and factors associated with infection in household settings.
Results: Of the 79 household contacts, 53 (67%) developed SARS-CoV-2 infection [49 (62%) symptomatic, 4 (5%) asymptomatic]. Eight patients (10%) developed severe COVID-19, and one died of COVID-19 pneumonia (case-fatality rate: 1.9%). The probability of SARS-CoV-2 infection was similar in children and adults (55% vs. 72%, P=0.14), with children being less likely to develop symptomatic disease (46% vs. 68%, P=0.06). Handwashing ≥5 times/day was associated with reduced infection risk (52.8% vs. 76.9%, P=0.04).
Conclusions: SARS-CoV-2 has a high frequency of transmission among household contacts. Non-hospitalized individuals with SARS-CoV-2 infection should be quarantined in patient care facilities rather than at home to minimize spread, if possible, and frequent handwashing should be practiced to prevent transmission. This article is protected by copyright. All rights reserved.
Keywords: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; coronavirus disease 2019, COVID-19; handwashing; infectious disease transmission; quarantine.
. 2021 Feb 4.
doi: 10.1002/jmv.26847. Online ahead of print.
Infection and disease spectrum in individuals with household exposure to SARS-CoV-2: A family cluster cohort study
Wen Xie[SUP] 1 [/SUP], Zhihai Chen[SUP] 2 [/SUP], Qi Wang[SUP] 1 [/SUP], Meihua Song[SUP] 2 [/SUP], Ying Cao[SUP] 1 [/SUP], Lin Wang[SUP] 2 [/SUP], Calvin Q Pan[SUP] 1 [/SUP]
Affiliations
- PMID: 33538342
- DOI: 10.1002/jmv.26847
Abstract
Objectives: We primarily quantified exposure patterns, transmission characteristics, and the clinical spectrum of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among household contacts of individuals with severe coronavirus disease (COVID-19).
Methods: We conducted a retrospective cohort study of 20 index patients hospitalized with severe COVID-19 and 79 of their household contacts. We determined the transmission frequency, range of manifestations of SARS-CoV-2 infection, and factors associated with infection in household settings.
Results: Of the 79 household contacts, 53 (67%) developed SARS-CoV-2 infection [49 (62%) symptomatic, 4 (5%) asymptomatic]. Eight patients (10%) developed severe COVID-19, and one died of COVID-19 pneumonia (case-fatality rate: 1.9%). The probability of SARS-CoV-2 infection was similar in children and adults (55% vs. 72%, P=0.14), with children being less likely to develop symptomatic disease (46% vs. 68%, P=0.06). Handwashing ≥5 times/day was associated with reduced infection risk (52.8% vs. 76.9%, P=0.04).
Conclusions: SARS-CoV-2 has a high frequency of transmission among household contacts. Non-hospitalized individuals with SARS-CoV-2 infection should be quarantined in patient care facilities rather than at home to minimize spread, if possible, and frequent handwashing should be practiced to prevent transmission. This article is protected by copyright. All rights reserved.
Keywords: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; coronavirus disease 2019, COVID-19; handwashing; infectious disease transmission; quarantine.