Measles (Rubeola) - Frequently Asked Questions Learning about measles: What is measles? Do I need protection from measles when I travel to other countries? What should I know about the measles/mumps/rubella (MMR) vaccine? (What is a PDF document?) Ongoing concerns: Why are immunizations needed for less common diseases? What should I know about childhood immunizations? Can the vaccine for measles cause autism? What should I know about giving over-the-counter medicines to my child?