Health secretary Robert F Kennedy Jr and his department have made a series of misleading statements that alarmed vaccine experts and advocates in recent days " including that the measles, mumps and rubella (MMR) vaccine includes "aborted fetus debris". Health department officials released statements saying they could alter vaccine testing and build new "surveillance systems" on Wednesday, both of which have unnerved experts who view new placebo testing as potentially unethical. Prior to being confirmed to the role of health secretary, Kennedy was arguably the nation's most prominent anti-vaccine advocate and led a non-profit known for prolific misinformation. He also earned money by referring clients to law firms suing vaccine makers.