Asymptomatic and Presymptomatic Severe Acute Respiratory Syndrome Coronavirus 2 Infection Rates in a Multistate Sample of Skilled Nursing Facilities

Abstract

This cross-sectional study examines the prevalence of asymptomatic and presymptomatic severe acute respiratory syndrome coronavirus 2 infection in skilled nursing facilities.

Figure.. Variation in Counts of Residents With SARS-CoV-2 Who Were Asymptomatic or Presymptomatic at Time of First Facility-Wide Point Prevalence Survey (N = 173), by County SARS-CoV-2 Prevalence

SARS-CoV-2 Indicates severe acute respiratory syndrome coronavirus 2; SNF, skilled nursing facility. Each point represents an individual SNF, showing the combined count of asymptomatic and presymptomatic SARS-CoV-2 resident cases at time of first facility-wide point prevalence survey. A resident was asymptomatic if they had no new symptoms from 5 days before testing to 14 days after testing; presymptomatic if they had no new symptoms in the 5 days prior to testing but developed symptoms up to 14 days after testing. The SNFs that underwent unit-based point prevalence surveys only are not included. The SNFs are stratified based on whether the county in which the SNF was located was in the top 5th, middle 20th, or bottom 75th percentile of US counties for SARS-CoV-2 prevalence as of the date of the SNF’s first point prevalence survey. Data as of July 15, 2020.