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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Anti-vaccine activism | 3/8 | https://en.wikipedia.org/wiki/Anti-vaccine_activism | reference | science, encyclopedia | 2026-05-05T09:10:46.395880+00:00 | kb-cron |
Anti-vaccine activism in the 2000s regained prominence through exploratory research by Andrew Wakefield based on 12 selected cases. He then made claims about a link between the MMR vaccine and autism. These claims were subsequently extensively investigated and found to be false, and the original study turned out to be based on faked data. The scientific consensus is that there is no link between the MMR vaccine and autism, and that the MMR vaccine's benefits in preventing measles, mumps, and rubella greatly outweigh its potential risks. The idea of an autism link was first suggested in the early 1990s and came to public notice largely as a result of the 1998 Lancet MMR autism fraud, which Dennis K Flaherty at the University of Charleston characterized as "perhaps the most damaging medical hoax of the last 100 years". The fraudulent research paper authored by Wakefield and published in The Lancet falsely claimed the vaccine was linked to colitis and autism spectrum disorders. The paper was retracted by Lancet in 2010 but is still cited by anti-vaccine activists. The claims in the paper were widely reported, leading to a sharp drop in vaccination rates in the UK and Ireland. Promotion of the claimed link, which continued in anti-vaccination propaganda for the next three decades despite being refuted, was estimated to have led to an increase in the incidence of measles and mumps, resulting in deaths and serious permanent injuries. Following the initial claims in 1998, multiple large epidemiological studies were undertaken. Reviews of the evidence by the Centers for Disease Control and Prevention, the American Academy of Pediatrics, the Institute of Medicine of the US National Academy of Sciences, the UK National Health Service, and the Cochrane Library all found no link between the MMR vaccine and autism. Physicians, medical journals, and editors have described Wakefield's actions as fraudulent and tied them to epidemics and deaths. An investigation by journalist Brian Deer found that Wakefield, the author of the original research paper linking the vaccine to autism, had multiple undeclared conflicts of interest, had manipulated evidence, and had broken other ethical codes. After a subsequent 2.5-year investigation, the General Medical Council ruled that Wakefield had acted "dishonestly and irresponsibly" in doing his research, carrying out unauthorized procedures for which he was not qualified, and acting with "callous disregard" for the children involved. Wakefield was found guilty by the General Medical Council of serious professional misconduct in May 2010, and was struck off the Medical Register, meaning he could no longer practise as a physician in the UK. The Lancet paper was partially retracted in 2004 and fully retracted in 2010, when Lancet's editor-in-chief Richard Horton described it as "utterly false" and said that the journal had been deceived. In January 2011, Deer published a series of reports in the British Medical Journal, in which a signed editorial stated of the journalist, "It has taken the diligent scepticism of one man, standing outside medicine and science, to show that the paper was in fact an elaborate fraud." A 2011 journal article described the vaccine-autism connection as "the most damaging medical hoax of the last 100 years". Wakefield continues to promote anti-vaccine beliefs and conspiracy theories in the United States. In February 2015, Wakefield denied that he bore any responsibility for the measles epidemic that started at Disneyland among unvaccinated children that year. He also reaffirmed his discredited belief that "MMR contributes to the current autism epidemic". By that time, at least 166 measles cases had been reported. Paul Offit disagreed, saying that the outbreak was "directly related to Dr. Wakefield's theory". Wakefield and other anti-vaccine activists were active in the American-Somali community in Minnesota, where a drop in vaccination rates was followed by the largest measles outbreak in the state in nearly 30 years in 2017. The anti-vaccination movement was historically apolitical, but in the 2010s and 2020s, the movement in the United States has increasingly targeted conservatives. As measles outbreaks increased, so did calls to eliminate exemptions from vaccine administration. As of 2015, 19 American states had suggested legislation to eliminate or increase the difficulty of exemptions. Concurrently, American anti-vaccine activists reached out to libertarian and right-leaning groups such as the Tea Party movement to broaden their base. While earlier anti-vaccination activists focused on health impacts and safety of vaccines, recent themes increasingly involve philosophical arguments about liberty, medical freedom and parental rights. With the growing anti-vaccine movement from the 2010s onwards, the United States has seen a resurgence of certain vaccine-preventable diseases. The measles virus lost its elimination status in the US as the number of cases continued to rise in the late 2010s, with 17 outbreaks in 2018 and 465 in 2019 (as of April 4, 2019).