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.
Some vaccines can be so effective and easy to deliver that they have the capacity to single-handedly eradicate entire diseases from human history. But some vaccines have reduced efficacy when introduced to impoverished communities in the "global south." Dr. K. Zaman outlines the clear moral imperative to overcome this global divide and two ways to start closing the gap in vaccine efficacy.