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Another study has establish no link between autism and the vaccine against measles , mumps and epidemic roseola ( called the MMR vaccine ) . This time , the determination comes from a study of children at gamy risk of developing autism .
Although numerous studies have shown thatvaccines do not cause autism , some parent still believe that vaccines and autism are related , and thus choose to not vaccinate their kids , researchers say .
In the new report , researcher examined health data and vaccination records of about 96,000 children who all had old sibling . The researchers found that there was no connexion between receiving the MMR vaccine and prepare autism , even for the children who had anincreased risk of autism because their older siblingshad been diagnose with the condition . Other studies have shown that have an previous sibling with autism is a risk factor for develop the shape .
The researchers wanted to look at more information on the MMR vaccinum and autism jeopardy because " despite the research that show no link between the MMR vaccine [ and autism],parents continue to believe that the vaccine is contributing to autism , " say field of study author Dr. Anjali Jain , of The Lewin Group , a health precaution consulting firm in Falls Church , Virginia . " Parents who already have a child with autism seem especially prostrate to this belief , " Jain sum .
Indeed , the researcher also come up that the MMR vaccination pace were lower among the baby whose older sib had autism than among children whose honest-to-god sib did not have the condition .
Although the new written report did not examine the rationality for the conflict in these MMR inoculation rates , late surveys have shown that some parent who have a child with autism blame the vaccine for the term , the researcher sound out . These parent may choose to not vaccinate their younger kidskin .
Still , the new study shows that , even in high-pitched - risk families , there is no increased endangerment of autism related to the MMR vaccinum , said Dr. Thomas Frazier , theatre director of Cleveland Clinic Center for Autism , who was not involved in the new subject field .
Many big cogitation have shown that the MMR vaccine does not cause autism . For example , in a review of study published by theCochrane Library in 2012 , which include a total of nearly 15 million child , researchers found no relationship between the vaccine and autism .
In another review , release in2014 in the journal Vaccine , researcher analyzed the final result of former studies that admit more than 1.26 million children , and again found no linkup between the vaccinum and autism . In a review of 67 studies , published in2014 in the journal Pediatrics , the authors concluded , " There is unattackable evidence that the MMR vaccine is not affiliate with autism . "
Frazier explained why some parents might believe that vaccines cause autism , despite the scientific grounds that shows otherwise . " regrettably , it is a psychological problem ; it is not a information problem , " Frazier told Live Science . " So we could probably do a hundred more of these study , and you would not in reality change parents ' doings . "
One reason parents might conceive there ’s a movement - and - upshot relationship between vaccines and autism is that the oncoming of autism symptoms often concur with the time when fry get vaccinated , Frazier say . However , " in world , they just happen to occur at the same time in developing , " he said . Still , it is ruffianly to get this type of correlation out if people ’s minds , he added .
Parents who fear vaccinations may pick out to not inoculate their kids based on the contestation that they do n’t want to actively hurt their children , Frazier said . " I think this is the exact reason why the inoculation debate never go aside : It is because it is not about data ; it is about awe , " he said .
" And so [ parents ] end up opting for ' I am going to pass up inoculation , ' which , unluckily , has led to the spot where , really , it is more unwashed now to have these disease , " such as measles , that can be forestall through vaccination , Frazier add up .
The study was publish today ( April 21 ) in the Journal of the American Medication Association .
