Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study

Abstract Background In-person mass gathering events (MGE) are returning after a period of restrictions, yet few prospective scientific evaluations of their safety are available. Methods Prospective observational study, including both attendees of the French Intensive Care Society (FICS) annual meeti...

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Main Author: SRLF Trial Group
Format: Article
Language:English
Published: SpringerOpen 2022-02-01
Series:Annals of Intensive Care
Subjects:
Online Access:https://doi.org/10.1186/s13613-022-00986-x
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author SRLF Trial Group
author_facet SRLF Trial Group
author_sort SRLF Trial Group
collection DOAJ
description Abstract Background In-person mass gathering events (MGE) are returning after a period of restrictions, yet few prospective scientific evaluations of their safety are available. Methods Prospective observational study, including both attendees of the French Intensive Care Society (FICS) annual meeting held in Paris between June the 9th and June the 11th, 2021 and matched controls (healthcare professionals who stayed in the ICU during the conference). SARS-CoV-2 lateral flow test was performed on day 7. Follow-up occurred until day 21. Results Out of the 1824 healthcare professionals attending the congress (all of which fulfilled legal requirements: 7 days or more following a second dose of vaccine or a negative PCR test performed within less than 72 h), 520 (28.5%) agreed to participate. Follow-up data were received for 216 (41.5%) out of the 520 included attendees, and for 191 matched controls. No positive SARS-CoV-2 lateral flow test was reported in the attendees or in the matched controls. The probability of SARS-CoV-2 infection during the MGE was less than 1.7% in the attendees (95% confidence interval [0;1.7%]), less than 2% in the controls (95%CI [0;2%]) and the difference in probabilities of infection was less than 1.9% (95% CI [0;1.9%]). Conclusion During a low incidence period, in this population of congress attendees screened for SARS-CoV-2 by a lateral flow test at day 7, no positive cases could be documented, no concomitant infection occurred in the matched controls; suggesting no extra risk of infection during the MGE. Trial Registration: ClinicalTrial.gov, #NCT04918160.
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spelling doaj.art-9a1b81ab630149989683f82562c80dc22022-12-21T17:26:31ZengSpringerOpenAnnals of Intensive Care2110-58202022-02-011211710.1186/s13613-022-00986-xSanitary safety of the 2021 French Intensive Care Society medical conference: a case/control studySRLF Trial Group0Service de Médecinadditie Intensive Réanimation, Centre Hospitalier UniversitaireAbstract Background In-person mass gathering events (MGE) are returning after a period of restrictions, yet few prospective scientific evaluations of their safety are available. Methods Prospective observational study, including both attendees of the French Intensive Care Society (FICS) annual meeting held in Paris between June the 9th and June the 11th, 2021 and matched controls (healthcare professionals who stayed in the ICU during the conference). SARS-CoV-2 lateral flow test was performed on day 7. Follow-up occurred until day 21. Results Out of the 1824 healthcare professionals attending the congress (all of which fulfilled legal requirements: 7 days or more following a second dose of vaccine or a negative PCR test performed within less than 72 h), 520 (28.5%) agreed to participate. Follow-up data were received for 216 (41.5%) out of the 520 included attendees, and for 191 matched controls. No positive SARS-CoV-2 lateral flow test was reported in the attendees or in the matched controls. The probability of SARS-CoV-2 infection during the MGE was less than 1.7% in the attendees (95% confidence interval [0;1.7%]), less than 2% in the controls (95%CI [0;2%]) and the difference in probabilities of infection was less than 1.9% (95% CI [0;1.9%]). Conclusion During a low incidence period, in this population of congress attendees screened for SARS-CoV-2 by a lateral flow test at day 7, no positive cases could be documented, no concomitant infection occurred in the matched controls; suggesting no extra risk of infection during the MGE. Trial Registration: ClinicalTrial.gov, #NCT04918160.https://doi.org/10.1186/s13613-022-00986-xMass gathering eventSARS-CoV-2COVID-19TransmissionInfectious diseasePrevention
spellingShingle SRLF Trial Group
Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study
Annals of Intensive Care
Mass gathering event
SARS-CoV-2
COVID-19
Transmission
Infectious disease
Prevention
title Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study
title_full Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study
title_fullStr Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study
title_full_unstemmed Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study
title_short Sanitary safety of the 2021 French Intensive Care Society medical conference: a case/control study
title_sort sanitary safety of the 2021 french intensive care society medical conference a case control study
topic Mass gathering event
SARS-CoV-2
COVID-19
Transmission
Infectious disease
Prevention
url https://doi.org/10.1186/s13613-022-00986-x
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