Markus Andrew Buchfellner, M.D.

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.