Known for his vaccine skepticism, John F. Kennedy's nephew has been nominated by Donald Trump as health secretary. His first mission is to take on big pharmaceutical companies and food and drug regulatory agencies.

RFK Jr. may push the FDA to gather more data, and could try to fill the CDC's Advisory Committee on Immunization Practices with vaccine skeptics.

Washington — President-elect Donald Trump is expected to nominate Robert F. Kennedy Jr. to lead the Department of Health and Human Services, according to three sources familiar with the selection. Kennedy has a long record of criticizing vaccines, including spreading misleading claims about their safety.