Vaccine hesitancy was rising even before COVID-19 emerged – but the pandemic exacerbated the trend. More kindergartners are ...

One infected person can infect dozens of others. Stay informed to stay safe from the most contagious virus known to humans.

Being immunocompromised or in close contact with an infected person puts vaccinated people at a higher risk of infection, ...

The Biden administration spent $267 million on research grants and contracts related to "misinformation" in 2021, a watchdog ...

As the coronavirus spread, researchers worldwide scrambled to find ways to keep people safe. Some efforts were misguided.

Measles, a highly contagious disease considered to have been eradicated since the turn of the century, is making a comeback.

It’s been five years since COVID-19 arrived in the U.S., and in that time, adults age 50 and older have accounted for roughly 94 percent of the 1.2-plus million American deaths.

Five years after the World Health Organization declared a global pandemic, there has been progress — and backsliding in the ...

Santa Clara County Health Officer Dr. Sara Cody, who became a national figure during the COVID-19 pandemic, is set to retire ...

That’s the potential promise of a new study on a drug made by Japanese pharmaceutical company Shionogi. At a scientific ...

Measles cases spread across in southwest U.S., with low vaccination rates, misinformation contributing to surge, raising ...

Officials are urging pet owners not to feed their pets raw food or raw milk and to avoid letting them roam outside.