Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Panel A. The absolute number of COVID-19 tests results, March 2020–March 2021. p-trend for total tests = 0.042; p-trend for positive tests = 0.092. Panel B. Percentage of patients tested positive for COVID-19, March 2020–March 2021. p-trend = 0.834.
