Dr. K. Zaman is a senior scientist and epidemiologist at icddr,b — a leading health and biomedical research center based in Dhaka, Bangladesh. He has spent over 33 years conducting community-based epidemiological research and clinical trials among some of the most resource-deprived populations in the "global south." He is currently the principal investigator of multiple vaccine studies in Bangladesh, including vaccines for rotavirus, influenza, hepatitis E, Japanese encephalitis and polio.