Whooping cough is a highly contagious respiratory illness caused by a type of bacteria called Bordetella Pertussis, according to the CDC.

A new aggressive H3N2 subclade K flu strain is causing widespread illness in the United States, raising concerns over vaccine ...

A majority of counties across the U.S. are seeing a steady rise in vaccine exemptions for religious or personal beliefs among children entering kindergarten, a new study shows ...

Flu cases are climbing in Western Pennsylvania, driven by a fast-spreading strain that experts warn could prolong this year's ...

The CDC's recent changes to the childhood vaccine schedule have caused confusion and concern among public health experts, who warn that the changes could lead to reduced vaccination rates and ...