Children who received the hepatitis A vaccine and the measles and mumps vaccines before age six have a lower risk of developing autism than children who received them later in life, according to a new study published online in Pediatrics.
The study found that children who had received the two childhood vaccines before birth had a reduced risk of autism spectrum disorder (ASD) and also had a lower incidence of ASD, as measured by the Autism Diagnostic Observation Schedule (ADOS).
The findings raise concerns about whether the two vaccines are safe and effective, particularly for children who may not receive the MMR vaccine, a booster shot to which most of the children who are born with autism are exposed.
“This study shows that parents can get information about the safety and effectiveness of the vaccines, and the children should get the MMR,” said Dr. Michael F. Guglielmi, who led the study.
Dr. Gugaelmi is a professor of pediatrics and pediatrics at Boston Children’s Hospital and a member of the National Institutes of Health’s National Institute of Neurological Disorders and Stroke (NINDS).
Dr, Michael Gugaelsi, a professor at Boston Childs Hospital, and a co-author of the study, examine the effectiveness of childhood vaccines on children with autism spectrum disorders (ASDs) and autism.
Source: New England Journal of Medicine Vol.
285, Issue 8, November 16, 2016