Bird flu is now believed to be widespread in Massachusetts and is likely present even in places where there has not been a confirmed positive, state environmental and health officials said Wednesday.

Sen. Maggie Hassan confronted RFK Jr. during his Senate hearing, accusing him of undermining settled vaccine science and ...

RFK Jr.'s second Senate confirmation hearing focused on vaccines, Medicare, diversity, and science. Key Republicans were reticent to show support.

Like farmworkers, livestock veterinarians are at risk of bird flu infections. The study results could help protect them. And ...