Katherine O'Brien

Kate O'Brien
O'Brien with the Presidential Early Career Award for Scientists and Engineers (PECASE) award for 2010
Born1963 (age 6162)
NationalityCanadian American
EducationUniversity of Toronto
McGill University
Johns Hopkins Bloomberg School of Public Health
Occupation(s)Pediatric infectious disease physician
Epidemiologist
Vaccinologist
Years active1988-present
Children2

Katherine "Kate" L. O'Brien (born 1963) is a Canadian American pediatric infectious disease physician, epidemiologist, and vaccinologist who specializes in the areas of pneumococcal epidemiology, pneumococcal vaccine trials and impact studies, and surveillance for pneumococcal disease. She is also known as an expert in infectious diseases (including pneumonia and diarrheal diseases) in American Indian populations. O’Brien is currently the Director of the World Health Organization's Department of Immunization, Vaccines and Biologicals.