Dr. Geier is an MD and has a PhD in genetics. He spent 10 years working at the National Institute of Health, and was a professor at Johns Hopkins University as a geneticist. He is also the author of over 150 peer-reviewed publications.
He worked on vaccine safety and efficacy for more than 30 years. He was one of four scientists who worked to replace the DTP vaccine, a vaccine that caused every child to become sick with a high fever at the time of vaccination, with the DTaP vaccine, which is an attenuated vaccine and causes illness due to fever in only 3% of those vaccinated.
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