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- Title
The demography and characteristics of SARS-CoV-2 seropositive residents and staff of nursing homes for older adults in the Community of Madrid: the SeroSOS study.
- Authors
Candel, Francisco Javier; Barreiro, Pablo; Román, Jesús San; Carretero, María del Mar; Sanz, Juan Carlos; Pérez-Abeledo, Marta; Ramos, Belén; Viñuela-Prieto, José Manuel; Canora, Jesús; Martínez-Peromingo, Francisco Javier; Barba, Raquel; Zapatero, Antonio; study, the investigators of the SeroSOS
- Abstract
Background Nursing homes for older adults have concentrated large numbers of severe cases and deaths for coronavirus disease 2019 (COVID-19). Methods Point seroprevalence study of nursing homes to describe the demography and characteristic of severe acute respiratory syndrome by coronavirus 2 (SARS-CoV-2) immunoglobulin G (IgG)-positive residents and staff. Results Clinical information and blood samples were available for 9,332 residents (mean age 86.7 ± 8.1 years, 76.4% women) and 10,614 staff (mean age 45.6 ± 11.5, 86.2% women). Up to 84.4% of residents had frailty, 84.9% co-morbidity and 69.3% cognitive impairment; 65.2% of workers were health-aides. COVID-19 seroprevalence was 55.4% (95% confidence interval (CI), 54.4–56.4) for older adults and 31.5% (30.6–32.4) for staff. In multivariable analysis, frailty of residents was related with seropositivity (odds ratio (OR): 1.19, P = 0.02). In the case of staff, age > 50 years (2.10, P < 0.001), obesity (1.19, P = 0.01), being a health-aide (1.94, P < 0.001), working in a center with high seroprevalence in residents (3.49, P < 0.001) and contact with external cases of COVID-19 (1.52, P < 0.001) were factors associated with seropositivity. Past symptoms of COVID-19 were good predictors of seropositivity for residents (5.41, P < 0.001) and staff (2.52, P < 0.001). Conclusions Level of dependency influences risk of COVID-19 among residents. Individual and work factors, contacts outside the nursing home are associated with COVID-19 exposure in staff members. It is key to strengthen control measures to prevent the introduction of COVID-19 into care facilities from the community.
- Subjects
SPAIN; COGNITION disorders; RESEARCH; SEROPREVALENCE; OBESITY; COVID-19; IMMUNOGLOBULINS; FRAIL elderly; CONFIDENCE intervals; NURSING home patients; SICK people; MULTIVARIATE analysis; AGE distribution; MEDICAL personnel; COMMUNITIES; BLOOD collection; PSYCHOSOCIAL factors; DESCRIPTIVE statistics; VIRAL antibodies; ODDS ratio; NURSING home employees; COMORBIDITY; OLD age
- Publication
Age & Ageing, 2021, Vol 50, Issue 4, p1038
- ISSN
0002-0729
- Publication type
Article
- DOI
10.1093/ageing/afab096