Moderna's coronavirus vaccine just started its phase 3 trial — the first in the US. Here's how it'll work.

A researcher works on a vaccine for the new coronavirus at the Copenhagen University research lab…

Certain health conditions can increase the risk of severe disease from the coronavirus — here's what to watch out for

As the novel coronavirus continues to spread, growing concern about those most vulnerable to the virus…

21 million Americans don't have access to safe drinking water. That can put them at higher risk of getting COVID-19.

21 million people in the US don't have access to safe drinking water. For them, the…

A day-by-day breakdown of coronavirus symptoms shows how COVID-19 goes from bad to worse

Typical coronavirus patients develop a fever, dry cough, and shortness of breath, but these symptoms may…