David Geier and his father Mark Geier have a long track record of misrepresenting the science on vaccine safety.

Health experts took to one of the country's leading medical journals to pen searing rebukes of Robert F. Kennedy Jr.'s first weeks as the country's top health official —and they called upon their ...

David Geier has repeatedly claimed that vaccines cause autism. Working alongside his father, he has published a number of ...

Robert Kennedy Jr.'s Health and Human Services Department is attempting to revive the debunked autism-vaccine link.

The US National Institutes of Health (NIH) is planning a large study into whether vaccines are linked to autism, despite this ...

A discredited anti-vaccine advocate who has no medical background and who has been disciplined for practicing medicine ...

David Geier has been hired as a senior data analyst at H.H.S. According to several people, he will examine any potential ...

The claim of a link between vaccines and autism has been decisively debunked. Why has RFK Jr. put one of its promoters in ...

David Geier and his father Mark Geier have published numerous reports that falsely claim vaccines increase the risk of autism. Freelance Writer A researcher hyped by Robert F. Kennedy Jr., the ...

RFK Jr. has long come under fire for his vaccine skepticism—but previously cited research from Geier and his father Mark to back his stance. One researcher, Mitzi Waltz of Vrije Universiteit ...

David Geier and his father Mark Geier, MD, are known for several discredited studies claiming that thimerosal, a preservative containing low levels of ethylmercury used in some vaccines ...