Initial and Repeated Point Prevalence Surveys to Inform SARS-CoV-2 Infection Prevention in 26 Skilled Nursing Facilities — Detroit, Michigan, March–May 2020
Early Release / July 1, 2020 / 69
Guillermo V. Sanchez, MSHS, MPH1; Caitlin Biedron, MD1; Lauren R. Fink, MPH2; Kelly M. Hatfield, MSPH1; Jordan Micah F. Polistico, MD3,4; Monica P. Meyer, MS, MPH3,4; Rebecca S. Noe, MN, MPH1; Casey E. Copen, PhD1; Amanda K. Lyons, MS1; Gonzalo Gonzalez, DNP2; Keith Kiama2; Mark Lebednick2; Bonnie K. Czander2; Amen Agbonze2; Aimee R. Surma, MS2; Avnish Sandhu, DO3,4; Valerie H. Mika, MS4; Tyler Prentiss, MA5; John Zervos, JD5; Donia A. Dalal2; Amber M. Vasquez, MD1; Sujan C. Reddy, MD1; John Jernigan, MD1; Paul E. Kilgore, MD4; Marcus J. Zervos, MD4,5; Teena Chopra, MD3,4; Carla P. Bezold, ScD2; Najibah K. Rehman, MD2 (View author affiliations)
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What is already known about this topic?
Symptom-based screening in skilled nursing facilities (SNFs) is inadequate to detect SARS-CoV-2 transmission. Repeated point prevalence surveys (serial testing of all residents and health care personnel at a health care facility irrespective of symptoms) can identify asymptomatic cases during outbreaks.
What is added by this report?
Repeated point prevalence surveys at 26 Detroit SNFs identified an attack rate of 44%; within 21 days of diagnosis, 37% of infected patients were hospitalized and 24% died. Among 12 facilities participating in a second survey and receiving on-site infection prevention and control (IPC) support, the percentage of newly identified cases decreased from 35% to 18%.
What are the implications for public health practice?
Repeated point prevalence surveys in SNFs can identify asymptomatic COVID-19 cases, inform cohorting and IPC practices, and guide prioritization of health department resources.