Measles is a serious respiratory disease caused by a virus. It spreads easily through coughing and sneezing. In rare cases, it can be deadly. The measles, mumps, rubella (MMR) vaccine protects against measles.
adolescentvaccination.org
In-depth information from the Centers for Disease Control and Prevention, American Academy of Family Physicians, and the American Academy of Pediatrics
Fact sheet from CDC, American Academy of Family Physicians, and the American Academy of Pediatrics
Immunization Action Coalition
Measles information in Spanish for parents from the Centers for Disease Control and Prevention, American Academy of Family Physicians, and the American Academy of Pediatrics
Questions and Answers from the CDC