Konspirationen bakom barnvacciners orsak till autism.

Autistic Disorders

Of the vaccinees, 309 were hospitalized for autism after vaccination. When the shortest possible intervals between MMR vaccination and the day of hospitalization were assessed, these ranged from 3 days to 12 years and 5 months. No distinguishable clustering was detected in the intervals from vaccination to the hospitalization. The number of hospital admissions remained relatively steady during the first 3 years and then gradually decreased, as was expected because of the increasing age of the vaccinees (Fig 3). Forty-three children were vaccinated after the first hospitalization and 31 were hospitalized but remained unvaccinated between November 1982 and June 1986. Of the children hospitalized for autism, none made hospital visits because of inflammatory bowel diseases in 1982–1995.

In 1998, Wakefield et al suggested that MMR vaccine could cause enterocolitis leading to excessive absorption of peptides, disturbance of neurologic development, and autistic disorder within 14 days of immunization. This theory has been rebutted because of several methodological weaknesses, and the contradictory results of subsequent reports. Taylor et al investigated by the case series method whether clustering of autism occurred after MMR vaccination and found no support for the hypothesized link. A similar conclusion was reached in 2 time trend analyses from the United Kingdom and the United States. The incidence of autism varies widely among studies, and the observed increase may reflect better case ascertainment and the use of different definitions for the disorders.Although the first symptoms of autism are typically manifested at the age of MMR vaccination, there is no epidemiologic evidence that immunization causes autism.

Mumps, Measles, and Rubella Vaccine and the Incidence of Autism Recorded by General Practitioners: A Time Trend Analysis

Conclusions: Because the incidence of autism among 2 to 5 year olds increased markedly among boys born in each year separately from 1988 to 1993 while MMR vaccine coverage was over 95% for successive annual birth cohorts, the data provide evidence that no correlation exists between the prevalence of MMR vaccination and the rapid increase in the risk of autism over time. The explanation for the marked increase in risk of the diagnosis of autism in the past decade remains uncertain.

Abstract
Despite significant progress in the study of the epidemiology and genetics of autism, the etiology and patho-physiology of this condition is far from being elucidated and no curative treatment currently exists. Although solid scientific research continues, in an attempt to find explanations and solutions, a number of nonscientific and pure myths about autism have emerged. Myths that vaccines or mercury are associated with autism have been amplified by misguided scientists; frustrated, but effective parent groups; and politicians. Preventing the protection provided by vaccination or administration of mercury-chelating agents may cause real damage to autistic individuals and to innocent bystanders who as a result may be exposed to resurgent diseases that had already been “extinguished. ” That such myths flourish is a consequence of the authority of scientific evidence obtained by scientific methodology losing ground to alternative truths and alternative science. This article presents a narrative of the origin of the myths around autism.
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The discussion of the merits and shortcomings of evidence in science in general and of evidence-based medicine in particular is beyond the scope of this essay. However, even a superficial perusal reveals that the anti-vaccine movement, like the alternative medicine movement, is walking a thin line between using conventional scientific arguments, albeit flawed, to gain credibility, and rejecting the scientific methodology altogether. Through use of anecdotal cases of immediate or sharp regression into autism after vaccination, or miracle cures after unproven treatments, the anti-vaccine movement personalizes the issue.
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The anti-vaccine movement appears to be part of a larger trend of discontent and distrust in the established preeminence of scientific evidence over impressions and opinions. A corollary to the discontent is the democratization of health-related decision making, by which stakeholders have an increasingly stronger voice over experts, as well as the dethroning of the Expert. While democratization of health care decision making is cheered by liberals and conservatives alike, its benefits are still to be proven. Decisions in the area of disease prevention require knowledge of the medical field involved and an understanding of statistics, in the absence of which no amount of communication skills and efforts would do any good.

Vaccines and the changing epidemiology of autism

CONCLUSIONS:
There has (probably) been no real increase in the incidence of autism. There is no scientific evidence that the measles, mumps and rubella (MMR) vaccine or the mercury preservative used in some vaccines plays any part in the aetiology or triggering of autism, even in a subgroup of children with the condition.

Autism and measles, mumps, and rubella vaccine: no epidemiological evidence for a causal association

Our results do not support the hypothesis that MMR vaccination is causally related to autism, either its initiation or to the onset of regression-the main symptom mentioned in the paper by Wakefield and others. The data on clinical presentation and immunisation status of the cases in our study were recorded before the recent publicity suggesting a possible link between MMR vaccine and autism.