Sean S. M. Bullis, MD, is an infectious diseases fellow at the University of Vermont Medical Center in Burlington.
December 16, 2021
Article
August 17, 2021
Fourth COVID-19 Vaccine Dose Boosts Immunity Above Third Shot
Estrogen Treatment Reduces Risk of COVID-19 Mortality
FDA Approves Pfizer-BioNTech Booster Shot for Children 5 and Older
An Issue About COVID-19