The Infectious Disease Society of America says there have been “no deaths related to the measles, mumps and rubella vaccine in healthy individuals.” (Since the 1970s, the measles vaccine has been given in a combination shot with mumps and rubella to minimize the number of injections kids get.)

It used to be when you and I were kids, everybody got measles and measles gave you protection, lifetime protection against measles infection. The vaccine doesn't do that. Vaccine is effective for some people for life,