Vaccine hesitancy occurs when an individual is uncertain about their decision to get vaccinated. In this video, Dr. Heidi Larson, the founding director of the Vaccine Confidence Project at the London School of Hygiene & Tropical Medicine, discusses vaccine hesitancy and how it may impact the COVID-19 vaccination campaign. Topics include vaccine hesitancy and its root causes, vaccine hesitancy within the context of the COVID-19 vaccine, and the larger impacts of vaccine hesitancy on the vaccination process.