Vaccine scares

摘要

Vaccination has been one of the great success stories. It has eradicated smallpox; it has greatly reduced polio and measles; it has hugely improved the health of children and adults throughout the globe. But when a single study linked the measles, mumps and rubella (MMR) vaccine with autism some parents refused to have their children vaccinated. Despite scientific refutation, a major public scare, lasting for years, has resulted.