Infected with the coronavirus but not showing symptoms? A physician answers 5 questions about asymptomatic COVID-19

  Blood tests that check for exposure to the coronavirus are starting to come online, and preliminary findings suggest that many people have been infected without knowing it. Even people who do eventually experience the common symptoms of COVID-19 don’t start coughing and spiking fevers the moment they’re infected.

  William Petri is a professor of medicine and microbiology at the University of Virginia who specializes in infectious diseases. Here, he runs through what’s known and what isn’t about asymptomatic cases of COVID-19.