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Toxicity of Thimerosal
An Organic Mercurial Added To Vaccines

From The

Toxic Exposure Study Trust (TEST) Foundation

Is this any place to put a toxic organic mercury compound?

Thimerosal is considered the classic lipophilic sulfhydryl reactive agent having been used by scientists for over 30 years to inhibit numerous enzymes and cellular processes (see Thimerosal Studies) virtually all of which are vital for normal cellular functioning (see Thimerosal/sld041.htm).  Moreover, the levels of thimerosal required to produce these many toxic effects were often found to be much lower than the concentrations of thimerosal included in vaccines.  Given these facts, the vaccine manufacturers, the FDA and the CDC must surely have conducted numerous studies on the safety of thimerosal containing vaccines before ever allowing, much less recommending, they be administered to newborns and infants.  If so, where are the results of those studies published?  




  • ''In most vaccine containers, thimerosal is listed as a mercury derivative, a hundredth of a percent. And what I believed, and what everybody else believed, was that it was truly a trace, a biologically insignificant amount. My honest belief is that if the labels had had the mercury content in micrograms, this would have been uncovered years ago. But the fact is, no one did the calculation.''

    • By: Neal Halsey M.D., Pediatrician and Vaccinologists, Johns Hopkins University, Chairman of the American Academy of Pediatrics committee on infectious diseases from 1995 through June 1999

    • Source: New York Times article, Not-So-Crackpot Autism Theory, by Arthur Allen, November 10, 2002


  • "The active ingredient in thimerosal is ethylmercury, a close chemical relative of methylmercury. At high doses, methylmercury and some other forms of the heavy metal are known to damage the nervous system. Ethylmercury has not been well-studied, but the amount in vaccines is small (genetic size matters). Some children who received the maximum number of thimerosal-containing vaccines on the recommended childhood immunization schedule had exposures to ethylmercury that exceeded some safe exposure guidelines for methylmercury. In addition, some children could be particularly vulnerable or susceptible to mercury exposures because of genetic or other differences."


  • "The important thing to note is that thimerosal is an issue really only for pediatric vaccines for small children. The developing nervous system is very sensitive, so if they're exposed to mercury it's more likely to cause damage."


  • "The vaccine experts who added new vaccines into the routine schedule in the late 80?? and early 90?? have acknowledged that they did not add up the cumulative doses of mercury to which our children were exposed.  The CDC ?? own data shows an increased risk of 2.48 for autism in children who received full immunizations by six months compared to a less vaccinated population."
    • By Elizabeth Mumper, MD, President and CEO, Advocates for Children, Associate Professor of Clinical Pediatrics, University of Virginia School of Medicine

    • Published in an open letter to President Bush In support for a White House Conference on Autism


  • "The idea that vaccines, arguably the top public health achievement of the past half century, are damaging children is such a horrible possibility, or in my eyes a high probability (requires more neuro h20 tests), that no one wants to be associated with it. And that's tragic because it's all been done in the name of good. But it has to be pinned down. It's too important to be just a philosophical debate."


  • "Thimerosal, a mercury preservative, is being phased out of vaccines because of its potential toxicity in vulnerable children and concern from parents and clinicians. Although most of the current evidence favors the safety of the MMR vaccine, especially with the removal of thimerosal, continued research is needed in this area before parents will feel that this issue has been resolved completely."


  • "On sucking up to special interests: I guess that the back channel passage of that tailor-made -- and White House approved -- amendment to the Homeland Security Bill protecting Eli Lilly, maker of the questionable vaccine preservative Thimerosal, from billions in potential lawsuits just wasn't enough of an insult to democracy. To pour salt in that fresh wound, the administration has asked a federal claims court to block public access to documents unearthed in over a thousand Thimerosal-related lawsuits. Take that, suffering parents of autistic children!"



  • Homeland Insecurity - US Senate Votes to Keep Vaccine Language in Homeland Security Bill

    • Rep. Dick Armey, R-Texas, says he's behind a provision in the homeland security bill that protects Eli Lilly and Co. (CBS/AP)
    • "I did it and I'm proud of it," says Armey, R-Texas.


  • Eli Lilly Shielded from Prosecution Over Damages Caused by Thimerosal



  • Vaccines Are Getting a Booster Shot. As their profit potential jumps, so does new investment in R&D

    • Business Week Online, DECEMBER 9, 2002

    • By John Carey in Washington, with Kerry Capell in London


  • Safety of Aluminum Added to Vaccines as a Vaccine Adjuvant

    • Dr. Philip Rudnick Ph.D.

    • Professor Emeritus, Chemistry

    • West Chester University of Pennsylvania


  • Congressman Dan Burton questions the FDA and CDC officials at thimerosal hearings

    • June 19 2002

    • A United States congressman is calling for criminal penalties for any government agency that knew about the dangers of Thimerosal in vaccines, and did nothing to protect American children.




  • FDA's Hypocracy

    • By Cindy H. Dubin

    • Managing Editor

    • Pharmaceutical Formulation and Quality


  • Eli Lilly Documents Reveal Dangers of Thimerosal

    • Press Release from Waters and Kraus LLP

    • March 17, 2002


  • Thimerosal-Containing Vaccines and Neurodevelopmental Outcomes Meeting Agenda

    • Held  Monday, July 16, 2001 in Cambridge, MA

    • Organized by the the National Academies Institute of Medicine



    • Canada Communicable Disease Report

    • Volume 28-09

    • 1 May 2002


  • Link found between measles virus and gut abnormalities in children with developmental disorder

    • Potential viral pathogenic mechanism for new variant inflammatory bowel disease.

    • By Drs. V Uhlmann, C M Martin, O Sheils, L Pilkington, I Silva, A Killalea, S B Murch, A J Wakefield, JJ O'Leary

    • Molecular Pathology, April 2002.


  • Vaccines without thiomersal: why so necessary, why so long coming?

    • Dr. A.J. van't Veen

    • Department of Dermatology and Venereology, Erasmus University Hospital Rotterdam-Dijkzigt, Rotterdam, The Netherlands.




  • In Harm's Way Toxic Threats to Child Development Project

    • Addresses Toxic Chemical Influences on Developmental Disabilities
    • Includes a 140 page, fully referenced, peer reviewed report, addressing the links between toxic chemicals in our environment and learning, behavioral and developmental disabilities in children along with several slide presentations.
    • Also available are "Out of Harm's Way" Fact Sheet Series for Health Professionals and Patients PowerPoint Presentation "In Harm's Way Training Program for Health Professionals"

??he number of recommended childhood vaccines has increased substantially over the past several decades. Twenty years ago, children received 7 vaccines routinely and up to 5 shots by 2 years of age. Today, children receive 11 vaccines routinely and as many as 20 shots by age two.??nbsp;

Paul A. Offit, M.D., chief of Infectious Diseases and director of the Vaccine Education Center at The Children?? Hospital of Philadelphia 


  • The ADA Responds to Testimony Given by Dr. Boyd Haley at Hearings Chaired by Representative Dan Burton Regarding the Safety of Mercury in Dental Amalgam


  • Dr. Boyd Haley responds to the letter from  Robert M. Anderton, D.D.S., J.D., LL.M. challenging his statement to the Committee on Government Reform looking at the topic, Autism-Why the Increased Rates? A One Year Update


  • An Assessment of Thimerosal Use in Childhood Vaccines

    • By Leslie K. Ball, Robert Ball, and R. Douglas Pratt

  • PEDIATRICS Vol. 107 No. 5 May 2001, pp. 1147-1154


  • Metallothionein  Dysfunction in 99% of Patients Diagnosed with Autism Spectrum Disorders

    • By William J. Walsh, Ph.D., biochemist and chief scientist Anjum Usman, M.D., a physician, both of the Pfeiffer Center, Naperville, Illinois


    • Potential Role of Yeast and Fungi in Autism

      • Do Mycotoxins Produced by Pathogenic Yeast and Fungi Contribute to Oral Toxicity and Potentially to Systemic Diseases?

      • Published Studies on Mycotoxins Produced by Yeast and Fungi

      • Candida-Caused Autism? 

        • Bernard Rimland, Ph.D.
        • Autism Research Institute




    • Thimerosal Neurotoxicity

      • Part A - In Vitro Treatment of a Neuroblastoma Cell Line with Low Concentrations of Thimerosal Results in Apoptosis

      • Part B - In Vitro Treatment of a Neuroblastoma Cell Line with Low Concentrations of Thimerosal Results in Altered Nucleotide Binding


    • Studies Published in Peer Reviewed Scientific and Medical Journals Demonstrating the Toxicity of Thimerosal


    • Thimerosal, Vaccines and Autism

      • The latest research, reports, press releases, etc. on the possible link between the administration of thimerosal containing vaccines and autism


    • Thimerosal Content in Some US Licensed Vaccines

      • From the Vaccine Safety Institute


    • Reports on the First and Second International Public Conference on Vaccination

      • By Lisa Regan, Mothering Magazine

      • Sponsored by the National Vaccine Information Center (NVIC), a child-advocacy organization that promotes vaccine safety and informed choice.


    • Autistic Disorder

      • From the JAMA Patient Page, Vol 285, No. 13, April 4, 2001


    • Autism: A Unique Type of Mercury Poisoning

      • by Sallie Bernard, Albert Enayati, B.S., Ch.E., M.S.M.E., Teresa Binstock, Heidi Roger, Lyn Redwood, R.N., M.S.N., C.R.N.P., Woody McGinnis, M.D.


    • A Letter from Representative Dan Burton, Chairman of the Committee on Government Reform,  to Dr. Donna Shala, Secretary of Health and Human Services, Requesting a   Recall of Thimerosal Containing Vaccines






    • Association of American Physicians and Surgeons (AAPS) Votes to Oppose Vaccine Mandates



    • Measles, Mumps, and Rubella - Vaccine Use and Strategies for Elimination of Measles, Rubella, and Congenital Rubella Syndrome and Control of Mumps: Recommendations of the Advisory Committee on Immunization Practices (ACIP).


    • Thimerosal in Vaccines—An Interim Report to Clinicians from the American Academy of Pediatrics (AAP)


    • MMR Vaccination and Autism

      • By Dr. Andrew J Wakefield, Departments of Medicine and Histopathology, Royal Free and University College Medical School, Hampstead, London NW3 2PF, UK


    • Autism 99. A National Emergency

      • F. Edward Yazbak, MD, FAAP



    • The Verge of Vaccine Mania A Shot for This, a Shot for That. How Much Is Too Much?

      • By Nicholas Regush


    • Vaccinations - Yes or No?

      • Attempts at Eradicating Infectious Diseases are Putting Our Children at Risk

        • By Dr. Barbara Loe Fisher

      • Vaccinations: Modern Lifesavers

        •  By Dr. Eugene J. Gangarosa

      • Public Health Risks of Not Vaccinating Children
        Vol. 285 No. 12, March 28, 2001



    • Thimerosal and Gulf War Syndrome

      • The Anthrax Vaccine Saga: How Not to Develop a Vaccine Program

        •  By Dr. Meryl Nass, M.D.

      • Is There A Link Between Receipt Of Multiple Thimerosal Containing Vaccinations, Stress Induced Increases in Blood-Brain Barrier Permeability And Gulf War Syndrome?


    • Links to Articles, News Releases from Governmental Agencies and Other Websites  Regarding the Safety and Use of Thimerosal



    All of the original research shown on this web page was wholly funded by ALT, Inc.   The purpose of this web page is to educate persons in the health care community and the public at large about the potential dangers resulting from exposure to thimerosal containing compounds and substances.  ALT, Inc. does not and has not profited in any way from this research nor does the company offer any goods or services which can be used to detect or monitor for toxicity resulting from exposure to thimerosal.  We at ALT, Inc. believe very strongly in eliminating all unnecessary and avoidable forms of exposure to mercury and mercury containing compounds.  This includes thimerosal in vaccines and mercury in dental "silver" amalgam fillings.  This is especially true of infants, small children, pregnant women and women of child bearing age who are more susceptible to the toxic effects of mercury.   Individuals wishing to express their concerns regarding the use and/or dangers of thimerosal should contact the following individuals:

    CDC National Immunization Program

    Dr. Walter Orenstein,
    Director of the Centers for Disease Control and Prevention's 
    National Immunization Program
    National Immunization Information Hotline: 1-800-232-2522

    Dr. Robert Snyder
    E-mail: ros@cdc.gov
    Telephone: 404-639-8222

    U.S. Food and Drug Administration

    Dr. Kathryn Zoon,
    Director of the Center for Biologics Evaluation and Research
    at the Food and Drug Administration (FDA),

    Dr. L. K. Ball
    Division of Vaccines and Related Products Applications,
    Office of Vaccines Research and Review, Center for Biologics Evaluation and Research,
    E-mail: balll@cber.fda.gov

    Dr. Gerald Racanow
    Telephone: 301-827-2222

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