Dr MA is the Consultant (Antimicrobial Resistance) in the Infection Control Branch of Centre for Health Protection, responsible for coordination of territory-wide strategies and actions against antimicrobial resistance.

Dr MA is a specialist in Public Health Medicine and he has obtained his Master of Medical Science (Public Health) and Doctor of Medicine. He has been working in the Centre for Health Protection since its establishment, mainly responsible for surveillance, epidemiological investigation and infection control of various communicable diseases including SARS, pandemic influenza H1N1, COVID-19 and multi-drug resistant organisms. He has received the Best Original Research by Trainees Gold and Bronze medals of the Hong Kong Academy of Medicine, and serves as an Epidemiology Adviser of the Hong Kong Medical Journal.