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There is a popular theory circulating the internet that thimersol in vaccinations has contributed to the increase in Autism levels in the US. There is absolutely no scientific evidence that there is any link between the two. When reading material on the internet about this subject, keep in mind the source of the information. Often the information is only opinion, and not researched scientific data. Vaccinations are vital for the health of all people, and have very few side effects, mostly limited to soreness at the injection site and mild fever. Please read the information provided by the Centers for Disease Control (CDC) website for more general information about vaccines and vaccine safety, and from the Vaccine Information Center, which provides scientific evidence for the safety and efficacy of vaccines. Both are provided below in "Related Links" Can autism be caused by Thiomersal from vaccines? Technically the jury is still out... but not for long. And parents armed with their children's lab tests have made up their own minds. Since 2002 the U.S. Federal Omnibus Autism Proceeding has investigated whether Thiomersal (Thimerosal) causes autism. Nearly 5,000 children have cases filed in this area of the National Vaccine Injury Compensation Program, and the verdicts may be announced early in 2009. (Link to website below.)

Thimerosal is 49.6% ethylmercury by weight, and mercury in any form is a neurotoxin. Manufacturers Safety Data Sheets for Thimerosal state that the compound is a mutagen (mutates genes) and a teratogen (causes cancer). Research indicates Thimerosal causes damage at nanomolar levels: * 0.5 parts per billion ( ppb) mercury = Kills human neuroblastoma cells (Parran et al., Toxicol Sci 2005; 86: 132-140). * 2 ppb mercury = U.S. EPA limit for drinking water. * 20 ppb mercury = Neurite membrane structure destroyed (Leong et al., Neuroreport * 200 ppb mercury = level in liquid the EPA classifies as hazardous waste. * 600 ppb mercury = Level in a currently licensed Hepatitis B, multi-dose vaccine vial, labeled as trace. This is administered at birth. * 25,000 ppb mercury = Level in 94% of injectable influenza vaccines, 2007-2008. 2001; 12: 733-37). Many scientists and physicians worldwide believe that Thimerosal causes neurological and immunological damage, resulting in behaviors rather erroneously given the psychological label of autism spectrum disorder. Some examples: * Boyd E. Haley, PhD of the University of Kentucky, its former chemistry chair, has done extensive research on mercury toxicity from Thimerosal. * Thomas Burbacher, PhD of the University of Washington worked on a 2005 primate study that found ethylmercury bound to brain tissue more quickly than methylmercury. * Washington state chemist Andrew Hall Cutler, PhD, PE, a former NASA employee, treated himself for mercury poisoning. Cutler advises a large Yahoo listserv on biomedical treatments such as chelation, called "Autism-Mercury," and is the author of "Hair Test Interpretation: Finding Hidden Toxicities." Members of Congress who believe Thimerosal is linked to autism include Rep. Dan Burton (D-IN), Rep. Carolyn Maloney (D-NY), and former Rep. Dave Weldon, M.D. (R-FL). In May 2008 U.S. News & World Report medical editor Dr. Bernadine Healy was interviewed by CBS investigative reporter Sharyl Attkisson. Dr. Healy, a former director of NIH and former head of the American Red Cross, stated, "I think the government or certain public health officials within the government have been too quick to dismiss the concerns of these families without studying the population that got sick." She also said, "I think public health officials have been too quick to dismiss the hypothesis [vaccines can trigger autism] as irrational without sufficient studies of causation." The U.S. Centers for Disease Control has relied on epidemiological studies to defend its vaccine administration politics, rather than seek biological samples from children on the autism spectrum. Other Thimerosal/autism resources: * 2005 book "Evidence of Harm" by investigative journalist David Kirby * The Coalition for SafeMinds (Sensible Action For Ending Mercury-Induced Neurological Disorders) * No Mercury * Jenny McCarthy's Autism Organization - Generation Rescue * === === The information on limits on mercury levels and mercury toxicity is based on studies of a different form of mercury (methylmercury), not thiomersal (ethylmercury). They might not have the same toxicity effects at the same amounts. There is a study that has been looking at the differences between both types, published in Environmental Health Perspectives.

Andrew Wakefield, the researcher who controlled the well-known study that claimed a link between autism and vaccinations had falsified the results to show that vaccinations caused autism. In fact, several of his subjects showed signs of autism before the vaccinations. The medical and hospital records of the children were obtained in early 2009, and those show very different results from the ones that Andrew Wakefield claimed. He is defending himself against charges of professional misconduct for his ethical conduct regarding the study. In addition to falsifying the results, he also had accepted funding prior to begining the study to prove that the MMR vaccine was harmful, so it was a conflict of interest when he did this study. The link for "The Children's Hospital of Philadelphia: A Look at What Causes, and Doesn't Cause, Autism" comments on Wakefield's two studies. Also related to autism and thiomersal (U.S.: thimerosal), a review in Clinical Infectious Diseases (February 2009) of the various studies of vaccines and autism show that there is no difference in autism rates between children vaccinated with thiomersal-containing vaccines and children vaccinated with thiomersal-free vaccines.

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βˆ™ 2009-06-24 04:30:37
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βˆ™ 2015-05-14 02:35:47

No, there is absolutely no link between vaccines and autism.

Autism is a neurological difference, it is a result of genetics and is formed when the brain is formed during the second trimester of pregnancy. Vaccines cannot time-travel to changes the genes of a persons parent or change their brain development within the womb. The idea of vaccines being linked to autism is nonsense only believed by ableist anti-vaxxers.

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Q: Is thimersol in vaccinations linked to autism?
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How does a person develop autism?

No one knows for sure what causes autism, but there's a good chance that it's linked to early-childhood vaccines. Many parents of autistic kids say their kids were normal and changed after vaccinations.

Can you get autism for a vaccination later in life?

Autism is a neurological difference, as such you are born autistic and you cannot become autistic. Autism and vaccinations are completely unrelated.

Are infant vaccinations linked to autism?

No, there is no link between vaccinations and autism. This idea first came about in 1998 when a study was published by Andrew Wakefield that said there was a link between MMR and autism - this study was shown to be completely fraudulent, however many people today continue to believe this due to people pushing pseudoscience to further their own causes, such as to spread fear about vaccinations or autism, or to sell expensive autism treatments to parents, or simply out of ignorance. Autism is a neurological difference, as the brain is formed within the womb common sense dictates that vaccines cannot cause autism - a vaccine cannot change the brain, nor can it go back in time to change a babies development within the womb.

Are there children who have autism that have not had vaccines?

Yes, of course there are autistic children and adults who have not had any vaccinations. Vaccines have absolutely no relation to autism what-so-ever.

Which parent passes autism?

Autism is believed to be genetic, it's more strongly linked to the father but can be a result of both parents genes. There are theories that Autism is not just linked to specific genes but to pairs of genetic mutations from both parents, that when paired result in Autism.

Why do people say vaccinations are a bad idea?

Mainly because they're gullible and not very bright. Some people do have bad reactions to certain vaccinations, but the nonsense about vaccinations causing autism or ADD or whatever is ... um ... nonsense.

Unvaccinated children with autism?

I am not sure what your question here is? Yes, many parents of children with autism , after much research, decide on not proceeding with any further vaccinations for their child.

What type of mutation causes autism?

The mutation that causes Autism is a rare genetic mutation. There are three different genes that are linked to the cause of different disorders on the Autism Spectrum.

Can high levels of lead in children lead to autism?

While high lead levels are linked to mental retardation and central nervous system damage in infants and children, they have not been specifically linked to autism.

What percent of children that have not been vaccinated have autism?

The exact same percent as children that have been vaccinated. There is absolutely no link what-so-ever between vaccinations and Autism, a child is born Autistic and vaccinations cannot time-travel to change the childs development in the womb or change it's parents genes.

What are the certain types of infections that cause autism?

There are no types of infections that cause autism. Autism is a neurological difference that is formed when the brain is formed in the womb, we don't know the full cause of autism but it is primarily linked with genetic mutations.

What evidence is there that MMR is unlikely to cause autism?

It's not that MMR is unlikely to cause autism, it cannot cause autism full-stop. Autism is a neurological difference so it occurs within the second trimester of pregnancy when the brain is being formed, no vaccination can cause autism. Billions have been wasted on thousands of research projects to prove that there is absolutely no link between autism and vaccinations.

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