Other research reinforced the relationship between shingles vaccines and dementia. In 2024, a study of 200,000 U.S. older adults showed the recombinant subunit zoster vaccine (Shingrix) was associated with a larger reduction in dementia risk than the live zoster vaccine.

Prasad was hired by Health Secretary Robert F. Kennedy Jr., a long-time anti-vaccine activist, who has been working to remake U.S. vaccine policy and has called for placebo-based trials of vaccines in the past. Many scientists say it is not typically possible to run such trials for ethical reasons.

A group of advisers to the Centers for Disease Control and Prevention is preparing to vote on whether the agency should scrap its long-standing recommendation that every baby get a hepatitis B vaccina

One dose of a bivalent or nonavalent HPV vaccine was noninferior to two doses, the randomized ESCUDDO trial found. Vaccine effectiveness was at least 97% against HPV16 or 18 infection no matter whether a participant received one or two doses of the bivalent or nonavalent vaccine.

A new study suggests a single HPV vaccination appears just as effective as two doses at preventing the viral infection that causes cervical cancer.

FDA chief medical officer Vinay Prasad told reporters that the agency would be changing its vaccine approval process.

By blocking a molecule that pushes the immune system into overdrive, a vaccine protects mice from life-threatening anaphylaxis

Edward Jenner was able to formulate a makeshift smallpox vaccine all the way back in 1798, but even back then, people weren’t very normal about it. Skeptics spread alarming propaganda, claiming the medicine (which did protect many people from falling dangerously ill) would turn children into cow-like demon creatures and make them very sick.