Joseph Sriyal Malik Peiris is a Hong Kong-based Sri Lankan virologist, most notable for being the first person to isolate the SARS virus. He is the current Tam Wah-Ching Professor in Medical Science, and Chair Professor of Virology at the Division of Public Health Laboratory Sciences, School of Public Health, University of Hong Kong. He was a member of the Strategic Advisory Group of Experts on Immunization of the World Health Organization from 2009 to 2010.