The MMR vaccine became available in the late 1960s.In the early 1970s,organizations began recording the number of people with autism.The incidence of autism has increased 20- to 30-fold since that time.The number of children immunized with the MMR vaccine has also increased since that time.This rise in the rate of autism with the increased use of vaccines is a ________.

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The Answer of The MMR vaccine became available in the late 1960s.In the early 1970s,organizations began recording the number of people with autism.The incidence of autism has increased 20- to 30-fold since that time.The number of children immunized with the MMR vaccine has also increased since that time.This rise in the rate of autism with the increased use of vaccines is a ________.

The MMR Vaccine Became Available in the Late 1960s