Lessons From Mass-Testing for Coronavirus Disease 2019 in Long-Term Care Facilities for the Elderly in San Francisco.

Louie, Janice K; Scott, Hyman M; DuBois, Amie; Sturtz, Natalya; Lu, Wendy; Stoltey, Juliet; Masinde, Godfred; Cohen, Stephanie et al. · Clin Infect Dis · 2021

case_series · Level IV

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Abstract

Coronavirus disease 2019 can cause significant mortality in the elderly in long-term care facilities (LTCF). We describe 4 LTCF outbreaks where mass testing identified a high proportion of asymptomatic infections (4%-41% in healthcare workers and 20%-75% in residents), indicating that symptom-based screening alone is insufficient for monitoring for COVID-19 transmission.

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