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 ...

The World Health Organization has declared COVID-19 a pandemic. This is a landmark event. As an epidemiologist listening to the steady stream of conversation around the coronavirus, I’m hearing ...

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 ...

Crain’s Cleveland Business: John Grabowski, the Krieger-Mueller Joint Professor in History, discussed the similarities—and differences—between the 1918 flu pandemic and the COVID-19 pandemic.

LONDON (Reuters) - The World Health Organisation is considering changing the way it classifies and describes international epidemics, amid a protracted public debate over whether to call the outbreak ...