%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Reyne, B.
%A Selinger, Christian
%A Sofonea, M. T.
%A Miot, S.
%A Pisoni, A.
%A Tuaillon, E.
%A Bousquet, J.
%A Blain, H.
%A Alizon, S.
%T Analysing different exposures identifies that wearing masks and establishing COVID-19 areas reduce secondary-attack risk in aged-care facilities
%D 2021
%L fdi:010084235
%G ENG
%J International Journal of Epidemiology
%@ 0300-5771
%K COVID-19 ; aged-care facilities ; mask wearing ; generalized linear mixed ; models ; secondary-attack risk
%K FRANCE
%K HERAULT
%M ISI:000744086800012
%N 6
%P 1788-1794
%R 10.1093/ije/dyab121
%U https://www.documentation.ird.fr/hor/fdi:010084235
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2022-03/010084235.pdf
%V 50
%W Horizon (IRD)
%X Background: The COVID-19 epidemic has spread rapidly within aged-care facilities (ACFs), where the infection-fatality ratio is high. It is therefore urgent to evaluate the efficiency of infection prevention and control (IPC) measures in reducing SARS-CoV-2 transmission. Methods: We analysed the COVID-19 outbreaks that took place between March and May 2020 in 12 ACFs using reverse transcription-polymerase chain reaction (RT-PCR) and serological tests for SARS-CoV-2 infection. Using maximum-likelihood approaches and generalized linear mixed models, we analysed the proportion of infected residents in ACFs and identified covariates associated with the proportion of infected residents. Results: The secondary-attack risk was estimated at 4.1%, suggesting a high efficiency of the IPC measures implemented in the region. Mask wearing and the establishment of COVID-19 zones for infected residents were the two main covariates associated with lower secondary-attack risks. Conclusions: Wearing masks and isolating potentially infected residents appear to be associated with a more limited spread of SARS-CoV-2 in ACFs.
%$ 050 ; 052 ; 020