Doctor Gregory A. Poland is an American physician and vaccinologist.  He is the Mary Lowell Leary professor of medicine at the Mayo Clinic in Rochester, Minnesota, as well as the director of the Mayo Clinic's Vaccine Research Group.  He is also the editor-in-chief of the medical journal Vaccine.  Poland received his BA in biology from Illinois Wesleyan University  In 1977 where he was a member of Sigma Pi fraternity.  He received his MD from the Southern Illinois University School of Medicine in 1981.  Poland also received an MA in theology from Westminster Theological Seminary.  Doctor Poland is known for researching the immunogenetics of responses to certain vaccines, including smallpox vaccines.  He has also written about the negative impacts of the false claim that the MMR vaccine might cause autism, and is an outspoken advocate of mandatory influenza vaccination.  After developing tinnitus after his COVID vaccination he has called for better safety studies.