Viral mismatch between circulating strains and vaccine may have weighed down effectiveness ...

Florida reported 8 new measles cases, bringing the total to 132. Collier County's outbreak added more cases but two were in ...

Twenty-nine states and the District of Columbia now reject at least some federal vaccine guidance as the federal Centers for Disease Control and Prevention continues to de-emphasize the importance of ...

Though Trump himself has frequently espoused doubts and mistruths about vaccines, polling around anti-vaccine policy has undoubtedly shaken the White House’s confidence during a tough midterm election ...