RFK Jr to remove preservative thimerosal from all US vaccines
The ingredient has been the target of anti-vaccine campaigns and misinformation for decades. Arguments against the preservative culminated in June, when a key federal vaccine advisory panel, remade with Kennedy's ideological allies, recommended against the preservative.
The recommendation goes into force upon Kennedy's signature.
There is no evidence thimerosal has caused harm, despite decades of use. The ethylmercury-based preservative was used in only about 5% adult influenza vaccines in the US, helping prevent contamination in multi-dose vials.
'After more than two decades of delay, this action fulfills a long-overdue promise to protect our most vulnerable populations from unnecessary mercury exposure,' Kennedy said in a statement announcing the decision.
'Injecting any amount of mercury into children when safe, mercury-free alternatives exist defies common sense and public health responsibility. Today, we put safety first,' said Kennedy.
Thimerosal is an ethylmercury-based preservative – different from the kind of mercury found in seafood, called methylmercury. Ethylmercury has a shorter half-life in the body. The amount of ethylmercury contained in a flu vaccine (25 micrograms) is about half of that contained in a 3oz serving of canned tuna fish (40 micrograms).
The preservative has been used in vaccines since before the second world war. It was controversially phased out of most childhood vaccines in 1999, physicians associations said as a precautionary measure, and was contained in only a very small number of adult vaccines.
Phasing out the preservative in the early 2000s was criticized by experts who argued scientific evidence did not support its removal, that it sent mixed messages and that it provided a talking point for anti-vaccine campaigners. Indeed, the preservative was targeted for years to come.
That criticism came to a head in June, after Kennedy fired all 17 members of the Centers for Disease Control and Prevention's (CDC) advisory committee on immunization practices, a federal panel that was a critical link in the vaccine distribution pipeline.
Kennedy replaced the experts with eight hand-picked allies, including one directly from the anti-vaccine movement. Eventually, one appointee dropped out after a conflict of interest review.
The vaccine advisory panel voted in favor of removing thimerosal on a 5-1 vote (with one abstention) after a controversial presentation from Lyn Redwood, a former leader of World Mercury Project, the predecessor to Kennedy's group Children's Health Defense, itself a prolific anti-vaccine campaign group.
Redwood's presentation had to be updated after it was found to contain a link to a study that did not exist. One of Kennedy's vaccine advisors said during the meeting that a presentation from career scientists at the CDC, which laid out thimerosal's safety, was pulled by the secretary's office.
The director of the CDC is required to sign off on the vaccine advisory committee's recommendations. Because there is not presently a Senate-confirmed CDC director, Kennedy acts as head of the CDC.
The decision to remove thimerosal from all vaccines in the US will also probably complicate the global picture for vaccine makers.
'With the US now removing mercury from all vaccines, we urge global health authorities to follow this prudent example for the protection of children worldwide,' Kennedy said.
Hashtags
Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles
The Guardian
3 hours ago
- The Guardian
Top medical body concerned over RFK Jr's reported plans to cut preventive health panel
A top US medical body has expressed 'deep concern' to Robert F Kennedy Jr over news reports that the health secretary plans to overhaul a panel that determines which preventive health measures including cancer screenings should be covered by insurance companies. The letter from the the American Medical Association comes after the Wall Street Journal reported on Friday that Kennedy plans to overhaul the 40-year old US Preventive Services Task Force because he regards them as too 'woke', according to sources familiar with the matter. During his second term, Donald Trump has frequently raged against organizations and government departments that he considers too liberal – often without any evidence. The US president, and his cabinet members such as Kennedy, have also overseen huge cuts and job losses across the US government. The taskforce is made up of a 16-member panel appointed by health and human services secretaries to serve four-year terms. In addition to cancer screenings, the taskforce issues recommendations for a variety of other screenings including osteoporosis, intimate partner violence, HIV prevention, as well as depression in children. Writing in its letter to Kennedy on Sunday, the AMA defended the panel, saying: 'As you know, USPSTF plays a critical, non-partisan role in guiding physicians' efforts to prevent disease and improve the health of patients by helping to ensure access to evidence-based clinical preventive services.' 'As such, we urge you to retain the previously appointed members of the USPSTF and commit to the long-standing process of regular meetings to ensure their important work can be continued without disruption,' it added. Citing Kennedy's own slogan of 'Making America healthy again,' the AMA went on to say: 'USPSTF members have been selected through an open, public nomination process and are nationally recognized experts in primary care, prevention and evidence-based medicine. They serve on a volunteer basis, dedicating their time to help reduce disease and improve the health of all Americans – a mission well-aligned with the Make America Healthy Again initiative.' According to the Affordable Care Act, public and private insurance companies must cover any services recommended by the Preventive Services Task Force without cost sharing. In a statement to MedPage Today, Department of Health and Human Services spokesperson Andrew Nixon did not confirm the reports, instead saying: 'No final decision has been made on how the USPSTF can better support HHS' mandate to Make America Healthy Again.' Reports of Kennedy's alleged decision to overhaul the taskforce come after the American Conservative published an essay earlier this month that described the taskforce as advocating for 'leftwing ideological orthodoxy'. It went on to accuse the panel of being 'packed with Biden administration appointees devoted to the ideological capture of medicine', warning that the 'continued occupation of an important advisory body in HHS – one that has the capacity to force private health insurers to cover services and procedures – by leftwing activists would be a grave oversight by the Trump administration'. In response to the essay, 104 health organizations, including the American Medical Association, issued a separate letter to multiple congressional health committees in which they urged the committees to 'protect the integrity' of the taskforce. 'The loss of trustworthiness in the rigorous and nonpartisan work of the Task Force would devastate patients, hospital systems, and payers as misinformation creates barriers to accessing lifesaving and cost effective care,' the organizations said. In June, Kennedy removed all 17 members of a US Centers for Disease Control and Prevention panel of vaccine experts. Writing in a Wall Street Journal op-ed, he accused the committee of having too many conflicts of interest. Kennedy's decision to overhaul the immunization panel was met with widespread criticism from health experts, with the American Public Health Association executive director Georges Benjamin calling the ouster 'a coup'. 'It's not how democracies work. It's not good for the health of the nation,' Benjamin said.
The Guardian
4 hours ago
- The Guardian
If we're serious about protecting pregnancies, we need to stop spraying pesticides
As a biochemist trained in environmental health, I was relieved to see coverage of pesticide exposure and pregnancy risk (Exposure to a mix of pesticides raises risk of pregnancy complications, study suggests, 19 July). But one key detail is missing: food is not the main route of exposure for most women, especially in urban environments. While dietary pesticide levels are regulated, many studies – including urine biomonitoring – have shown less difference in pesticide load between children eating organic and conventional diets in cities than we would expect. Why? Because exposure is happening elsewhere. Pesticides are being sprayed by building managers, neighbours, city governments and businesses – on sidewalks, in apartment hallways, in parks, and even indoors. Many women are exposed without ever handling these chemicals themselves. In fact, a 2020 study found that urban women who used pesticides at home had the same increased risk of birth defects as women exposed to farm drift: a threefold increase in holoprosencephaly, one of the most common birth defects in the US. We must shift the conversation beyond food. These chemicals are in the air women breathe and the homes they live in – often without their knowledge or consent. If we're serious about protecting pregnancies, we need to stop the ShaveOlympia, Washington, US
The Independent
5 hours ago
- The Independent
This fuzzy animal friend may be the key to treating schizophrenia
Llamas – likely without red pajamas – may hold the key to treating schizophrenia. The serious brain disorder causes people to interpret reality abnormally, and affects approximately 3.7 million U.S. adults between the ages of 18 to 65 years old, according to the nonprofit RTI International. But the domesticated South American woolly animal might be be able to help. French researchers said this week that they had used llama antibodies, or proteins that help to protect the immune system, to design a tiny fragment of an antibody known as a 'nanobody' that will trigger a neurotransmitter in the brain involved in regulating neural activity. Neurotransmitters are chemical molecules that carry messages or signals from one nerve cell to the next target cell, according to the Cleveland Clinic. No llamas were harmed in the study and researchers can identify nanobodies in a petri dish. In the past, llama antibodies have also proven effective in fighting Covid and other 'SARS-like' viruses. When scientists at the Institute of Functional Genomics injected the molecule into the veins or the muscles, it was able to break the blood-brain barrier and effectively reach brain receptors. The barrier is a a tightly locked layer of cells that defend your brain from harmful substances. Studying the impact of the nanobodies in two tests using mice, the researchers found that they corrected cognitive deficits that were observed. There was an improvement of cognitive function with just one shot, and a prolonged effect over one week. Clinical studies are now required to show that their findings could be a new avenue of treatment for schizophrenia. "In humans obviously we don't know [yet], but in mice yes, it is sufficient to treat most deficits of schizophrenia," molecular biologist Jean-Philippe Pin told Newsweek.. He was a co-author of the research which was published in the journal Nature. Pin said that medications currently given to schizophrenia patients "treat the symptoms well, but less the cognitive deficits." The cause of the chronic condition remains unknown, but the World Health Organization says it is thought that an interaction between genes and a range of environmental factors may be the reason. The exact prevalence of schizophrenia is difficult to measure. Some have tied cases in Canada to cannabis use. Although schizophrenia can occur at any age, people are typically diagnosed between the ages of 16 and 30. Symptoms vary from person to person. There is no cure, but it can be treated through antipsychotic medications, talk therapy, and self-management strategies, the National Alliance on Mental Illness says. The study's authors hope to add this strategy to the list. 'This research confirms the potential of nanobodies as a new therapeutic strategy for acting on the brain, with their use eventually being broadened to include the treatment of other neurological illnesses,' the institute said in a statement.
