Tuesday, January 08, 2008

California Study: Autism Cases Rise in Spite of Vaccine Changes

California public health researchers have found that the prevalence of autism spectrum disorders in young children has risen, even after doctors stopped using a mercury-containing preservative thimerosal in the vaccines babies receive.

The study, "Continuing Increases in Autism Reported to California Developmental Services System," is published in the January 2008 issue of Archives of General Psychiatry. The journal has made the full text of the article available online here.

The study asked: Since people are concerned that the mercury preservative used in vaccines causes autism, what happened after 1999, when the government and doctors recommended the nation stop using vaccines containing thimerosal for infant inoculations such as DTP (diphtheria, tetanus and pertussis) and hepatitis B?

Instead of seeing a decrease in autism diagnoses, the state Department of Developmental Services (DDS) saw an increase in the estimated prevalence of autism cases. For each quarter from 1995 through the end of 2003, the prevalence of autism increased from 0.6 to 2.9 per 1,000 live births. (The prevalence for all developmental disabilities including autism also increased, from 5.4 to 8.9 per 1,000.)

The study authors continue: "From 2004 through March 2007, when we estimate exposure to thimerosal-containing vaccines during infancy and early childhood declined, the prevalence of children aged 3 to 5 years receiving services for autism continued to increase from 3.0 to 4.1 per 1,000 lives births."

The authors report in their conclusion:

Infants and toddlers in the United States were exposed to more of the ethylmercury-containing preservative, thimerosal, after recommendations in 1991 for universal administration of the hepatitis B virus and Hib [Haemophilus influenzae type b] vaccines.

They have been exposed to less thimerosal since at least the national recommendation in 1999 for its removal from childhood vaccines. If thimerosal exposure is a primary cause of autism, then the prevalence of autism would be predicted to decrease as young children's exposure to thimerosal has sharply decreased to its lowest levels in decades. We have instead found that the prevalence of autism in children reported to the DDS has increased consistently for children born from 1989 through 2003, inclusive of the period when exposure to TCVs [thimerosal-containing vaccines] has declined.

Moreover, since 2004, the absolute increase and the rate of increase in DDS clients aged 3 to 5 years with autism were higher than those in DDS clients of the same ages with any eligible condition, including autism. These time trends are inconsistent with the hypothesis that thimerosal exposure is a primary cause of autism in California.


Context for the California Study

This is the latest in a series of published research articles that fail to find a causal link between thimerosal and autism. There have been numerous media reports, analysis pieces, opinion articles, and books urging parents to trust the research and get their kids vaccinated.

Meanwhile, a special court in Washington is hearing a series of cases arguing that evidence shows that vaccines harmed their children and demanding compensatory damages.

But while ABC News reports today that the latest California study "may be the latest nail in the coffin of a theory that draws a link between the mercury-containing vaccine additive thimerosal and autism," the controversy is likely to continue.

The same day as the research report came out, the advocacy group SafeMinds.org, which supports research on the "potential harmful effects of mercury and thimerosal," had posted this note about the California study:

SafeMinds arrives at a different interpretation of the findings, showing that the data can equally support a primary causative role of thimerosal if autism causation is multifactorial. Vaccine components and environmental mercury, as well as other toxicants, are additional likely candidates. Deficiencies of the DDS data and imprecise thimerosal exposure assumptions make determination of the contribution of thimerosal to autism rates difficult. The increase in autism cases reported by Schechter and Grether since the 1980s highlights the urgency of the autism epidemic and the need to institute a rigorous and comprehensive environmental factors research program.


Also see:

* Autism: Why the Debate Rages, an article by CBS News correspondent Sharyl Attkisson.

* Scientists Raise Voices Against Parents Vaccinophobia

* Medical Journal Traces Vaccine Controversy to Moment When Doctors Failed to Communicate Clearly About Risks

* Special Court to Hear Autism Case

1 comment:

Allison Jones said...

Did you notice, that when they took out Thimerasol, they didn’t replace it with anything?
They didn’t need to, because the entire vial of vaccine is made up of heavy metals,: Aluminum and Mercury (see recipes in the PDR), used to suspend the germ particles in enough material to inject a dose. In the early 1990's they changed the DPT recipe, rinsing it out the Pertussis Toxins, and then, adding more back in (to make it work as a vaccine again). Pediarix has 4 times the amount of Pertussis Toxins as Adacel, 10 times as much as the original DPT. The Question then becomes, which did your baby get, and how many times? A baby's sensitivities depends on its genes, that's the genetic factor. And those whom were sensitive to Tetanus or Diptheria, would not survive them, or might, but suffer the scars from being seared by two of the most powerful toxins (paralyzing/necrotizing) known to man.
For the Autistics, their only hope is to grow new brain cells, and connections, depending on the scars. And this has proven possible in the Higher Brain region with a great diet, etc. So there is always the possibility that their brains can continue to recover in miraculous ways. We need a better understanding of what happens when the Old Brain region is damaged, this area regulates major body chemistry. It harbors the Pituitary, controlling the chemistry of Digestion. This area contains the foundation of everything basically human; physical, mental, and emotional. It is the root of all Instinctual Behavior.Autism is about recovery from the loss of these things, and as their Higher Brains become more advanced, they can cognitively teach themselves what is missing instinctually. In the natural world, germs enter only a few at a time. In vaccines, germs are shot in massive amounts to the brain, like missles, and Autism the result of scrapnel. I’ve been studying this in detail, on a microscopic level, since 1984, when my 4 year old son got his first DPT and became paralyzed for 3 days. If he’d been a baby, his heart and lungs would have become paralyzed too (SIDS). Learn developing brain physiology, with lots of diagrams for visual learning, GO to: http://www.trackingvaccinations.com

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