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Biotech / Medical : Share your aches,pains,experiences,joys and cures.
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To: jERRY Ö¿Ö who wrote (1392)5/19/2008 7:55:01 PM
From: Cogito  Read Replies (1) of 1564
 
Jerry -

I can understand how one might not want to inject mercury into oneself. However, the toxicity of mercury depends on the form in which you find it. In Thiomersal, which is called thimerosal in this country, it appears not as an element, but in a fairly benign form, as a mineral salt. It metabolizes into ethylmercury in the blood. Before 2008, risk assessment for ethylmercury was based on studies done on methylmercury, as it was assumed that the two compounds would be metabolized at approximately the same rate. In a study done in 2008, however, ethylmercury has been found to be cleared from the blood much faster than methylmercury. Ethylmercury was found to have a half life in the blood of 3.7 days, as opposed to 44 days for methylmercury.

The study was actually done on infants and newborns.

pediatrics.aappublications.org

The highest level of blood mercury found in any of the infants was 8ng/ml. That's 8 nanograms per milliliter of blood. That's an amazingly small amount, and it was found in an infant who had received the largest dose tested in the study, equivalent to 32.5 micrograms of mercury. The report showed that "Blood mercury levels fell rapidly and had largely returned to baseline levels by day 11 after vaccination."

Is there any risk whatsoever in vaccines using thimerosal? It's not possible to say that definitively. But the data support the idea that the risk is minimal.

In any case, children's vaccines are no longer made with thimerosal.

- Allen
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