Robert F. Kennedy Jr. faced intense questioning about his views on vaccines during his Senate confirmation hearing to become health secretary. The hearing grew contentious as senators pressed Kennedy on his past statements questioning vaccine safety and efficacy.

Kennedy, who has been nominated by President-elect Donald Trump to lead the Department of Health and Human Services, has previously expressed skepticism about certain vaccines. During the hearing, he downplayed the benefits of some vaccines while facing pointed questions from senators about his positions.

The confirmation hearing highlighted the controversial nature of Kennedy's nomination, given his history of questioning established medical consensus on vaccines. Senators from both parties appeared to scrutinize his qualifications and past statements regarding public health policies.

Kennedy's responses during the hearing are likely to influence the Senate's decision on his confirmation. His views on vaccines have drawn criticism from medical professionals and public health experts who argue that vaccines are crucial for preventing disease outbreaks.

The nomination of Kennedy, an environmental lawyer and member of the prominent political family, represents a significant departure from traditional health secretary appointments. His confirmation would place him in charge of major health agencies including the CDC, FDA, and NIH.