More than 40 percent of U.S. adults have serology indicative of past COVID-19 infection, of whom 43.7 percent report never having had COVID-19, according to research published in the Dec. 2 issue of ...

Here are answers to seven key questions about serology testing that will help you to understand how it relates to COVID-19, and why it’s significant. As more and more COVID-19 data are collected, the ...