Myoung-don Oh mainly focuses on Internal medicine, Bacteremia, Surgery, Antibiotics and Outbreak. The Internal medicine study combines topics in areas such as Gastroenterology, Immunology and Tuberculosis. His work carried out in the field of Bacteremia brings together such families of science as Mortality rate, Ciprofloxacin, Klebsiella pneumoniae and Antibacterial agent.

He has researched Surgery in several fields, including Vancomycin and Risk factor. His Antibiotics research focuses on Staphylococcus aureus and how it relates to Logistic regression. His Outbreak research includes elements of Transmission, Middle East respiratory syndrome coronavirus, Epidemiology and Coronavirus.