Andrew Jeremy Wakefield is a British fraudster, discredited academic, anti-vaccine activist, and former physician.

Anti-vaccine activism, also called the "anti-vax" movement, is organized activity to show opposition to vaccination, often designed to increase vaccine hesitancy by disseminating misinformation or disinformation. Although myths, conspiracy theories, misinformation and disinformation spread by the anti-vaccination movement and fringe doctors increase vaccine hesitancy and public debates around the medical, ethical, and legal issues related to vaccines, there is no serious hesitancy or debate within mainstream medical and scientific circles about the benefits of vaccination.