Dr. Karunanayake graduated from the North Colombo Medical College and trained in general medicine at the Postgraduate Institute of Medicine (PGIM), Colombo, and in infectious diseases at the University Hospital Aintree (Fazakerly), Liverpool, UK.  He is currently senior lecturer in clinical medicine at the University of Colombo and a specialist physician at the National Hospital of Sri Lanka, Colombo.  He is actively involved in postgraduate training in general medicine at the PGIM and in courses conducted by the Ceylon College of Physicians, of which he has been secretary in the past. He is active in MRCP PACES related activies. He is an examiner in general medicine (in theory, clinicals and as chief examiner in viva) for the MD at the PGIM.  He has also supervised one master’s thesis, and carries out research on dengue and infections in immunocompromised patients.