Markus Andrew Buchfellner, MD

Dr. Markus Buchfellner is a board-certified pediatrician and pediatric infectious diseases specialist with advanced training in the care of immunocompromised children. He completed his pediatric residency at the University of South Florida where he trained at Tampa General Hospital and Johns Hopkins All Children's Hospital. He then completed his fellowship in Pediatric Infectious Diseases at the University of Alabama at Birmingham and following that completed an additional year of subspecialty training through the Infectious Diseases in Immunocompromised Children Fellowship Program at St. Jude Children's Research Hospital. Dr. Buchfellner's clinical interests include treating infections in pediatric solid organ transplant recipients, bone marrow transplant recipients and oncology patients. He is interested in long term care following transplant to prevent infection namely through things like vaccines and preventative antibiotics post-transplant. He has also done work in antimicrobial stewardship and infection prevention in his career specifically focused on pediatric transplant populations. His research centers on studying viral infections, specifically cytomegalovirus (CMV) and T cell immunity and reconstitution after hematopoietic cell transplant recipients. He is also interested in outcomes in respiratory viral infections in transplant recipients. Previously, he led Alabama's contribution to the national investigation of the 2022 pediatric hepatitis outbreak linked to adenovirus during his time in fellowship training. He is deeply committed to medical education and has developed transplant medicine curricula and taught learners across multiple levels of training. He has delivered invited lectures nationally on topics including pediatric hepatitis, long COVID in children, and severe neonatal infections.