Abstract
During the first wave of COVID-19, nearly 50% of France's fatalities occurred in nursing homes. Older people with mental health disorders are considered to be more prone to infections when epidemics arise. To test this hypothesis, we conducted a retrospective descriptive and comparative study of the incidence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in a cohort of elderly residents with or without severe mental illness (SMI) living in a French nursing home facility. This was done during the first lockdown from March 17th until May 11th, 2020.Our study included 72 participants of 75 residents, of whom 58 contracted COVID-19, 14 developed a severe form requiring hospitalisation, and 14 died. The disease was significantly less frequent in residents with SMI 15(62%) than those without SMI 43 (89.6%). In regression analysis, a higher level of autonomy was significantly associated with a lower disease incidence. Once contracted, residents with or without SMI differed significantly neither on morbidity nor mortality. The period of survival did not either significantly differ between the two groups.As a potential explanation, we suggested that pathological social withdrawal added to stigmatisation could have protected SMI residents from contracting the disease.
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