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Impact of the first vaccine dose on COVID-19 and its complications in long-term care facilities and private residences for seniors in Québec, Canada.
Fortin, Élise; De Wals, Philippe; Talbot, Denis; Ouakki, Manale; Deceuninck, Geneviève; Sauvageau, Chantal; Gilca, Rodica; Kiely, Marilou; De Serres, Gaston.
Afiliación
  • Fortin É; Direction des risques biologiques et de la santé au travail, Institut national de santé publique du Québec, Québec, QC.
  • De Wals P; Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Québec, QC.
  • Talbot D; Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC.
  • Ouakki M; Direction des risques biologiques et de la santé au travail, Institut national de santé publique du Québec, Québec, QC.
  • Deceuninck G; Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Québec, QC.
  • Sauvageau C; Département de médecine sociale et préventive, Faculté de médecine, Université Laval, Québec, QC.
  • Gilca R; Direction des risques biologiques et de la santé au travail, Institut national de santé publique du Québec, Québec, QC.
  • Kiely M; Direction des risques biologiques et de la santé au travail, Institut national de santé publique du Québec, Québec, QC.
  • De Serres G; Centre de Recherche du CHU de Québec - Université Laval, Québec, QC.
Can Commun Dis Rep ; 48(4): 164-169, 2022 Apr 06.
Article en En | MEDLINE | ID: mdl-35480704
Background: Residents of long-term care facilities (LTCFs) and private residences for seniors (PRSs) were given priority for vaccination against coronavirus disease 2019 (COVID-19). Given the shortage of vaccine in the winter of 2021, the Comité sur l'immunisation du Québec recommended postponing the administration of second doses to ensure more rapid and widespread administration of first doses. The objective of this study was to measure the impact of first-dose vaccination on 1) the incidence of cases and complications in LTCFs and PRSs and 2) the frequency of outbreaks in LTCFs. Methods: In this ecological study, COVID-19 incidence and complications in residents of LTCFs and PRSs in Québec were compared with the general (community) population at a point in time when there was still only limited eligibility for vaccination. Results: After vaccination in LTCFs, the incidence rate of COVID-19 decreased by 92% compared with 49% in the community, and deaths decreased by 95%. By six weeks post-vaccination, almost no facility reported five or more cases per 100 beds per week. The incidence rate decreased by 91% in PRSs compared with 2% in the community. Hospitalizations and deaths in PRSs decreased by 94% and 90%, respectively. Conclusion: As a result of 1) vaccination of residents with one dose, 2) natural immunity already acquired in LTCFs and PRSs, 3) vaccination of healthcare workers and 4) other non-pharmaceutical prevention measures implemented, the circulation of the coronavirus in these settings was largely interrupted.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Can Commun Dis Rep Asunto de la revista: DOENCAS TRANSMISSIVEIS / EPIDEMIOLOGIA Año: 2022 Tipo del documento: Article Pais de publicación: Canadá
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Can Commun Dis Rep Asunto de la revista: DOENCAS TRANSMISSIVEIS / EPIDEMIOLOGIA Año: 2022 Tipo del documento: Article Pais de publicación: Canadá