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Study shows lower autism rate in vaccinated kids

Posted Dec 03 2009 7:46am

A study just released claims that kids who are vaccinated against measles have a much lower autism rate.

The sudy was published in The Pediatric infectious disease journal.

Lack of Association Between Measles-Mumps-Rubella Vaccination and Autism in Children: A Case-Control Study

the team is out of Poland:

Mrozek-Budzyn D, Kietyka A, Majewska R.

From the Department of Epidemiology and Preventive Medicine, Jagiellonian University, Collegium Medicum, Krakow, Poland.

Here is the abstract:

OBJECTIVE:: The first objective of the study was to determine whether there is a relationship between the measles-mumps-rubella (MMR) vaccination and autism in children. The second objective was to examine whether the risk of autism differs between use of MMR and the single measles vaccine. DESIGN:: Case-control study. STUDY POPULATION:: The 96 cases with childhood or atypical autism, aged 2 to 15, were included into the study group. Controls consisted of 192 children individually matched to cases by year of birth, sex, and general practitioners. METHODS:: Data on autism diagnosis and vaccination history were from physicians. Data on the other probable autism risk factors were collected from mothers. Logistic conditional regression was used to assess the risk of autism resulting from vaccination. Assessment was made for children vaccinated (1) Before diagnosis of autism, and (2) Before first symptoms of autism onset. Odds ratios were adjusted to mother’s age, medication during pregnancy, gestation time, perinatal injury and Apgar score. RESULTS:: For children vaccinated before diagnosis, autism risk was lower in children vaccinated with MMR than in the nonvaccinated (OR: 0.17, 95% CI: 0.06-0.52) as well as to vaccinated with single measles vaccine (OR: 0.44, 95% CI: 0.22-0.91). The risk for vaccinated versus nonvaccinated (independent of vaccine type) was 0.28 (95% CI: 0.10-0.76). The risk connected with being vaccinated before onset of first symptoms was significantly lower only for MMR versus single vaccine (OR: 0.47, 95% CI: 0.22-0.99). CONCLUSIONS:: The study provides evidence against the association of autism with either MMR or a single measles vaccine.

If we take these results at face value, the MMR vaccine may prevent autism. Also the single measles vaccine, recommended by Dr. Wakefield, is less “safe” than the MMR.

To be honest, I don’t think these results are consistent with previous, large population studies of MMR and autism. An odds ratio of 0.17 (meaning you are six times more likely to be autistic if you didn’t get the MMR) should have been picked up.

I look forward to reading the full study. Somehow I doubt it will be posted to the Generation Rescue or SafeMinds websites!

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