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Reported incidence for all states in Mexico from 1985 to 2007 for (a) measles, (b) mumps, (c) rubella, (d) varicella, (e) scarlet fever, and (f) pertussis. Approximate vaccination start date is indicated with the red line for measles, mumps, rubella, and pertussis. The monovalent measles vaccine and the pertussis vaccine were introduced in 1991; the MMR vaccine (which supplanted the monovalent measles vaccine) was introduced in 1998.
