Rep. Morris has also introduced a second bill, HB 332, which would reportedly curb the use of vaccines which contain foreign human DNA. This bill would require that chicken pox and shingles vaccines doled out by Missouri health clinics to be free of human DNA contaminates. Both bills are a response to public health concerns about what is really in vaccines, and whether or not they're safe.
These bills could be a great step in the right direction, if they are actually passed.
The CDC's recommended guidelines have long been the driving force behind state vaccination policies and mandates, but in a sense, these new bills ignore the federal agency's opinion and authority -- simply by recognizing that people should not be expected to believe a substance as toxic as mercury is safe in any form.
It is no secret that the CDC has continued to purport that thimerosal and the ethylmercury it contains are perfectly safe. While the agency admits that methylmercury is quite toxic, they also state, "Thimerosal contains ethylmercury, which is cleared from the human body more quickly than methylmercury, and is therefore less likely to cause any harm."
While it is true that ethylmercury is more easily passed out of the body, research has indicated that does not mean it is less harmful. A 2014 study by a group of French researchers from the Institut Pasteur found that thimerosal exposure induced apoptosis (cell death) in T cells, depolarized the mitochondrial membrane and generated the production of reactive oxygen species. Notably, the researchers stated in their introduction that their research was prompted by a previous finding of in vitro toxicity related to a thimerosal-containing flu vaccine, Panenza.
The team found that even non-toxic concentrations of thimerosal -- which they report as being anywhere from 30 to 3000 times less than what is used in vaccines -- could inhibit the proliferation of T cells, which are an essential part of the immune system. Like most researchers, in spite of the evidence of toxicity, the team still concluded that thimerosal-containing vaccines are a necessary evil. But they did write in their conclusion, "However, our observations regarding its ex-vivo toxicity and immunomodulatory effects on human primary lymphocytes highlight the need to use this preservative with caution and avoid it if possible."
A 2013 paper by Brazillian reserachers even compared the toxicity of ethymercury and thimerosal with that of methylmercury. The team noted that while ethylmercury's toxicity profile is different that methylmercury's profile, in vitro studies have shown that the two "demonstrate equivalent measured outcomes for cardiovascular, neural and immune cells." They also note in vivo studies have shown that yes, ethylmercury is excreted and distrubted around the body more quickly that methylmercury. Overall, the researchers state that their findings indicated that "in real-life scenarios, a simultaneous exposure to both [ethylmercury] and [methylmercury] might result in enhanced neurotoxic effects in developing mammals."
Going back even further, in 2005, research found that while methylmercury caused higher levels of total mercury in the brains of animal test subjects, exposure to thimerosal resulted in twice as much inorganic mercury deposited in the brain. Inorganic mercury remains in the brain for much, much longer than organic forms, and its health effects are not fully understood. The researchers noted other research had linked persistent exposure to inorganic mercury to increased activation of the microglia -- which is a feature that has been seen in children with autism.
Thimerosal is not the only concerning ingredient found in vaccines, though it is perhaps one of the most well-recognized. Aluminum is another metal often purposely put into vaccines, despite its neurological affects. Aluminium has been linked to a number of ill effects, and recent research indicates it likely causes Alzheimer's disease.
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