Coronavirus Disease 2019 Outbreak in a San Francisco Homeless Shelter

Clin Infect Dis. 2021 Jul 15;73(2):324-327. doi: 10.1093/cid/ciaa1071.


We report the public health response to a coronavirus disease 2019 (COVID-19) outbreak in a San Francisco shelter where 67% of residents and 17% of staff tested positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We describe the limited utility of case investigation, person-based contact tracing and symptom screening, and the benefits of mass testing in outbreak response.

Keywords: COVID-19; SARS-CoV2; disease outbreaks; homeless persons.

MeSH terms

  • COVID-19*
  • Disease Outbreaks
  • Homeless Persons*
  • Humans
  • SARS-CoV-2
  • San Francisco / epidemiology