Health secretary RFK Jr. endorses the MMR vaccine — stoking fury among his supporters

An endorsement of the measles, mumps and rubella vaccine by Health and Human Services Secretary Robert F. Kennedy Jr. has provoked an angry outcry from anti-vaccine activists.

"The most effective way to prevent the spread of measles is the MMR vaccine," Kennedy said in the third paragraph of a lengthy post on the social media platform X. Kennedy made the post following meetings on Sunday in Gaines County, Texas with the families of two children who have died of measles during a recent outbreak in the state. He also said he had instructed the Centers for Disease Control and Prevention to "supply pharmacies and Texas run clinics with needed MMR vaccines," along with other medical supplies.