This guidance on wearing masks may change because of a pandemic in which large numbers of seemingly healthy people are unknowingly ill.
The drug, chloroquine phosphate, was originally developed to fight malaria.
What, exactly, is the coronavirus? How worried do we all need to be? And what practical steps can we take to protect ourselves?
Set yourself up for a healthy holiday season.
Measles had virtually vanished from the United States. But thanks to the anti-vaccine movement, outbreaks have returned.
Caused by a form of bacteria, Lyme disease is transmitted to humans through tick bites.