He has expertise in the field of general academic pediatrics and pediatric infectious diseases. His main areas of interest are vaccine development, vaccine safety and various pediatric infectious and dermatological disorders. He has conducted clinical research supported by the WHO, Merck and Pfizer regarding vaccines and other topics related to infectious and dermatological diseases in children. He has consulted for UNICEF and WHO on the issue of diarrheal diseases and presented in several international settings on immunization topics.