Dr. Thoon Koh Cheng is a Senior Consultant in Paediatric Infectious Diseases at KK Women's and Children's Hospital. He is highly experienced in treating severe infections such as meningitis, pneumonia, and tuberculosis, and provides care for various conditions, including chickenpox, rabies, and pre-adoption screening. He also offers guidance on travel vaccines and post-vaccination care for children. Dr. Thoon has expertise in managing both bacterial and viral infections, including pneumonia, skin infections, and bone or joint infections.

Dr. Thoon's extensive academic and professional roles include being a Clinical Professor at Duke-NUS Graduate Medical School and an Adjunct Associate Professor at the National University of Singapore. He has contributed significantly to the development of national health programs, including the KKH Vaccine Pocketbook and the National Inpatient Active Vaccine Safety surveillance program. Throughout his career, Dr. Thoon has received numerous awards for his work in pediatric infectious diseases and public health.