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 ...

A ‘bull market’ refers to a market that is “on the rise and where the conditions of the economy are generally favorable,” ...

Last month, for the first time in two decades, a 6-year-old child in the U.S. died due to measles. Just a few weeks later, a second person died. Both were unvaccinated, making them part of a worrying ...

Five years ago this week, the World Health Organization called the COVID-19 outbreak a pandemic. In the United States, officials declared a national emergency, triggering travel bans for non-U.S.

Michael Osterholm, University of Minnesota Center for Infectious Disease Research and Policy director, was driving to the airport the morning of Dec. 30, 2019, when his cellphone rang. A colleague was ...