The new figure comes as HHS Secretary Robert F. Kennedy Jr. has repeatedly delivered mixed messages about the outbreak.

Thimerosal, a mercury-based preservative used in multi-dose vials of vaccines in the United States, was removed from shots ...

Vaccination teams are part of an effort by health authorities across Mexico to contain the country’s biggest measles outbreak ...

Experts have pointed to RSV vaccine campaigns as a possible reason why. A separate CDC report shows that infant hospitalizations in the 2024-25 respiratory virus season were more than 40% lower than ...