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What to know about measles and the MMR vaccine
Measles is a viral infection that can cause a red, blotchy rash, fever, cough and a runny nose. This highly contagious condition can also lead to serious and even life-threatening complications, such as pneumonia and encephalitis. Because measles can be prevented with the measles, mumps and rubella (MMR) vaccination, most children are now protected from contracting the virus.