TY - JOUR
T1 - Associations of BNT162b2 vaccination with SARS-CoV-2 infection and hospital admission and death with covid-19 in nursing homes and healthcare workers in Catalonia
T2 - Prospective cohort study
AU - Cabezas, Carmen
AU - Coma, Ermengol
AU - Mora-Fernandez, Nuria
AU - Li, Xintong
AU - Martinez-Marcos, Montse
AU - Fina, Francesc
AU - Fabregas, Mireia
AU - Hermosilla, Eduardo
AU - Jover, Angel
AU - Contel, Juan Carlos
AU - Lejardi, Yolanda
AU - Enfedaque, Belen
AU - Argimon, Josep Maria
AU - Medina-Peralta, Manuel
AU - Prieto-Alhambra, Daniel
N1 - Publisher Copyright:
©
PY - 2021/8/18
Y1 - 2021/8/18
N2 - AbstractObjective To determine associations of BNT162b2 vaccination with SARS-CoV-2 infection and hospital admission and death with covid-19 among nursing home residents, nursing home staff, and healthcare workers. Design Prospective cohort study. Setting Nursing homes and linked electronic medical record, test, and mortality data in Catalonia on 27 December 2020. Participants 28 456 nursing home residents, 26 170 nursing home staff, and 61 791 healthcare workers. Main outcome measures Participants were followed until the earliest outcome (confirmed SARS-CoV-2 infection, hospital admission or death with covid-19) or 26 May 2021. Vaccination status was introduced as a time varying exposure, with a 14 day run-in after the first dose. Mixed effects Cox models were fitted to estimate hazard ratios with index month as a fixed effect and adjusted for confounders including sociodemographics, comorbidity, and previous medicine use. Results Among the nursing home residents, SARS-CoV-2 infection was found in 2482, 411 were admitted to hospital with covid-19, and 450 died with covid-19 during the study period. In parallel, 1828 nursing home staff and 2968 healthcare workers were found to have SARS-CoV-2 infection, but fewer than five were admitted or died with covid-19. The adjusted hazard ratio for SARS-CoV-2 infection after two doses of vaccine was 0.09 (95% confidence interval 0.08 to 0.11) for nursing home residents, 0.20 (0.17 to 0.24) for nursing home staff, and 0.13 (0.11 to 0.16) for healthcare workers. Adjusted hazard ratios for hospital admission and mortality after two doses of vaccine were 0.05 (0.04 to 0.07) and 0.03 (0.02 to 0.04), respectively, for nursing home residents. Nursing home staff and healthcare workers recorded insufficient events for mortality analysis. Conclusions Vaccination was associated with 80-91% reduction in SARS-CoV-2 infection in all three cohorts and greater reductions in hospital admissions and mortality among nursing home residents for up to five months. More data are needed on longer term effects of covid-19 vaccines.
AB - AbstractObjective To determine associations of BNT162b2 vaccination with SARS-CoV-2 infection and hospital admission and death with covid-19 among nursing home residents, nursing home staff, and healthcare workers. Design Prospective cohort study. Setting Nursing homes and linked electronic medical record, test, and mortality data in Catalonia on 27 December 2020. Participants 28 456 nursing home residents, 26 170 nursing home staff, and 61 791 healthcare workers. Main outcome measures Participants were followed until the earliest outcome (confirmed SARS-CoV-2 infection, hospital admission or death with covid-19) or 26 May 2021. Vaccination status was introduced as a time varying exposure, with a 14 day run-in after the first dose. Mixed effects Cox models were fitted to estimate hazard ratios with index month as a fixed effect and adjusted for confounders including sociodemographics, comorbidity, and previous medicine use. Results Among the nursing home residents, SARS-CoV-2 infection was found in 2482, 411 were admitted to hospital with covid-19, and 450 died with covid-19 during the study period. In parallel, 1828 nursing home staff and 2968 healthcare workers were found to have SARS-CoV-2 infection, but fewer than five were admitted or died with covid-19. The adjusted hazard ratio for SARS-CoV-2 infection after two doses of vaccine was 0.09 (95% confidence interval 0.08 to 0.11) for nursing home residents, 0.20 (0.17 to 0.24) for nursing home staff, and 0.13 (0.11 to 0.16) for healthcare workers. Adjusted hazard ratios for hospital admission and mortality after two doses of vaccine were 0.05 (0.04 to 0.07) and 0.03 (0.02 to 0.04), respectively, for nursing home residents. Nursing home staff and healthcare workers recorded insufficient events for mortality analysis. Conclusions Vaccination was associated with 80-91% reduction in SARS-CoV-2 infection in all three cohorts and greater reductions in hospital admissions and mortality among nursing home residents for up to five months. More data are needed on longer term effects of covid-19 vaccines.
UR - http://www.scopus.com/inward/record.url?scp=85113486834&partnerID=8YFLogxK
U2 - 10.1136/bmj.n1868
DO - 10.1136/bmj.n1868
M3 - Article
C2 - 34407952
AN - SCOPUS:85113486834
SN - 0959-8146
VL - 374
JO - The BMJ
JF - The BMJ
M1 - n1868
ER -
