A Department of Health and Human Services spokesperson called the move "a radical departure from past practices." ...

The Department of Health and Human Services says it will require new vaccines to be tested against a placebo, which could ...

Decades of research have turned up no miracle treatment for measles, but studies show the M.M.R. shot is 97 percent effective ...

New rules implemented by Health and Human Services Secretary Robert F. Kennedy Jr. will require updated existing vaccines to ...