Its not every day that a respiratory illness becomes the primary point of conversation in the U.S., but the new coronavirus, which causes the illness known as COVID-19, has us in a near-pandemic.

The difference between seasonal flu and pandemic flu is whether or not people have had a chance to build immunity to the virus through previous exposure. People are exposed to influenza viruses ...

SAN FRANCISCO -- As California becomes the first U.S. state to adopt an "endemic" approach to COVID-19, we take a closer look at what becoming "endemic" means and if virus levels have truly ...