Adverse events following measles-mumps-rubella and measles vaccinations in college students.

We studied adverse events reported by 401 measles, mumps and rubella (MMR) vaccinees and 391 unvaccinated controls at one college, and 133 measles (M) vaccinees and 352 unvaccinated controls at an adjacent college during a measles outbreak in Massachusetts in 1985. Rates of symptoms and signs experienced by MMR vaccinees, M vaccinees, and controls were essentially similar. No serious adverse events were detected.