US flu activity last week declined for the third week in a row, but major impacts are still being felt at hospitals and ...

Organizations funded by the United States helped keep dangerous pathogens in check around the world. Now many safeguards are ...

Rates of nearly all required childhood vaccinations have fallen in Lancaster County since the 2018-2019 school year, ...

Five countries reported polio cases this week, including Pakistan, which reported three cases of wild poliovirus type (WPV1), according to the latest update from the Global Polio Eradication ...