Mounting evidence points to a link between new-onset allergies and Long COVID, with mast cell activation syndrome as a ...

Female matriculants experience their largest increase in 4 years; men have an even higher increase for the third year in a row.

Add Yahoo as a preferred source to see more of our stories on Google. What are the most common COVID-19 symptoms doctors are seeing in October 2025? Read on to find out what to look out for, how to ...

Most of us now view COVID-19 as more of a nuisance than a danger, thanks to vaccines and past exposure to the virus—all of which have built up our immunity. But research suggests that multiple ...

Walensky is a professor at Harvard Medical School and served as the 19th director of the Centers for Disease Control and Prevention. Once clinical trials showed that Covid-19 vaccines were safe and ...