- Complementary and Alternative Medicine, Herbal Medicine, Acupuncture
- Microbiome, Probiotics, Prebiotics
- COVID-19, MERS, Tuberculosis, HIV/AIDS
- Artificial Intelligence, Big Data
- Clinical Research: Nephrology (Transplantation, Peritoneal Dialysis), Gastroenterology (Dyspepsia, Inflammatory Bowel Diseases, Colonic Polyps), Ophthalmology (Dry Eye, Meibomian Gland Dysfunction, Lacrimal Duct Obstruction), Orthopedics (Osteoporosis, Osteoarthritis), Critical & Palliative Care, Medical Education

1. Pongpirul WA, Pongpirul K, Ratnarathon AC, Prasithsirikul W. Journey of a Thai Taxi Driver and Novel Coronavirus. N Engl J Med 2020.
2. Lawthaweesawat C, Harris R, Isara W, Pongpirul K. Prehospital Care of the 13 Hypothermic, Anesthetized Patients in the Thailand Cave Rescue. N Engl J Med 2019;380(14):1372-3.
3. Pongpirul WA, Mott JA, Woodring JV, Uyeki TM, MacArthur JR, Vachiraphan A, et al. Clinical Characteristics of Patients Hospitalized with Coronavirus Disease, Thailand. Emerg Infect Dis 2020;26(7).