As testing for COVID-19 expands, cases are being picked up across the U.S., confirming what disease experts have predicted: that the virus has been here for some time and is making people sick.
That can make the occasional cough or sneeze suspicious. Is this COVID-19? How would you know if you have it?
The most detailed breakdown of symptoms of the disease comes from a recent World Health Organization analysis of more than 55,000 confirmed cases in China. Here are the most common symptoms and the percentage of people who had them: