The U.S. has finalized its withdrawal from the World Health Organization, one year after President Donald Trump announced America was ending its 78-year-old commitment, federal officials said Thursday ...

The U.S. also endured its highest flu-related hospitalization rates in almost 15 years last flu season, with unvaccinated ...

After decades of control, measles is resurging across the United States, pushing the country closer to losing its elimination ...

Nirsevimab may offer infants stronger protection against severe respiratory syncytial virus than maternal vaccination, ...

I’m wondering how federal immigration agents’ actions sit with those who saw vaccine mandates as government overreach, writes Heidi Stevens.