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 World Health Organization designated COVID-19 as a pandemic on March 11. So what’s the difference between a pandemic and an epidemic? Yahoo News explains.

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 ...

Ducharme is a contributor to TIME. Ducharme is a contributor to TIME. As a health journalist, I've written the phrase “the COVID-19 pandemic” more times than I care to count in the four years since ...