At least 216 U.S. children died of flu this season, the worst pediatric toll in 15 years, according to the Centers for ...

Scientists have found that receiving a COVID-19 booster shot in the same arm as the initial dose triggers a faster and more effective immune response, thanks to primed macrophages in nearby lymph ...

Robert F. Kennedy Jr.'s Make America Healthy Again movement, which focuses on ending what President Donald Trump's health ...

A handful of countries have reported measles outbreaks this year, with Romania reporting by far the highest number of cases.