The Latest Coronavirus Q&A: Everything You Need to Know Now

What experts know (and still don’t know) about the spread, symptoms, immunity, contagiousness, and more

Signs directing patients to a COVID-19 virus testing drive-up location outside Medstar St. Mary’s Hospital on March 17, 2020.
Signs directing patients to a COVID-19 virus testing drive-up location are shown outside Medstar St. Mary’s Hospital on March 17, 2020, in Leonardtown, Maryland. Photo: Win McNamee/Getty Images