Abstract
Inpatient psychiatric facilities have an inherently increased risk of infection transmission. This study aimed to evaluate the impact of roommate and unit mate exposures on COVID-19 transmission to inform on safest isolation practices. A single-center retrospective study was conducted among patients hospitalized in six units of an inpatient behavioral health hospital from July 2020 through August 2023. We compared the risk of COVID-19 acquisition after exposure among patients with a contagious roommate versus those exposed to a contagious unit mate. During the study period, the conversion rate was 10.05% overall, 24.4% for roommates, and 9.3% for unit mates; patients exposed to a roommate were at 3.14 times higher odds (95% confidence interval, 1.42-6.92) of acquiring COVID-19 after exposure. On unit-stratified analysis, patients exposed to a roommate on the geropsychiatric unit had the highest risk of post-exposure conversion compared to unit mate exposed patients (odds ratio 6.38, 95% confidence interval 1.75-23.22). Logistic regression analysis identified a non-significant risk associated with increased time in group therapy. Exposure to a COVID-19 contagious roommate significantly increases the risk of COVID-19 acquisition among exposed patients receiving inpatient psychiatric care. Cohorting contagious and exposed individuals and avoiding multi-bedded rooms may successfully mitigate COVID-19 transmission risk during psychiatric care.
Published Version
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