When it comes to infectious diseases in the news, you often hear terms like outbreak, epidemic, pandemic and endemic. The differences in these terms comes down to the scope of disease, the reach of ...

This article is based on reporting that features expert sources. With all the focus on the new coronavirus disease, COVID-19, you may hear some confusing and even misused terms. Epidemic and pandemic ...

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 ...