Seroprevalence of SARS-CoV-2 antibodies in a prospective cohort of patients admitted to an acute psychiatric ward in Norway during the initial months of the COVID-19 pandemic.

Seroprevalence of SARS-CoV-2 antibodies is comparable to the general population.Twenty-five percent of patients had elevated risk for a serious course of COVID-19 because of somatic conditions.Fifty-seven percent lived alone, 17% with one other person in the household.Twenty percent had regular salary as the main income source for the last three months before admission.