The MMR vaccine is a vaccine against measles, mumps, and rubella, abbreviated as MMR. The first dose is generally given to children around 9 months to 15 months of age, with a second dose at 15 months to 6 years of age, with at least four weeks between the doses. After two doses, 97% of people are protected against measles, 88% against mumps, and at least 97% against rubella. The vaccine is also recommended for those who do not have evidence of immunity, those with well-controlled HIV/AIDS, and within 72 hours of exposure to measles among those who are incompletely immunized. It is given by injection.
Richard Charles Horton is editor-in-chief of The Lancet, a United Kingdom–based medical journal. He is an honorary professor at the London School of Hygiene and Tropical Medicine, University College London, and the University of Oslo.
Brian Deer is a British investigative journalist, best known for inquiries into the drug industry, medicine, and social issues for The Sunday Times. Deer's investigative nonfiction book The Doctor Who Fooled the World, an exposé on disgraced former doctor Andrew Wakefield and the 1998 Lancet MMR autism fraud, was published in September 2020 by Johns Hopkins University Press.
Vaccine hesitancy is a delay in acceptance, or refusal, of vaccines despite the availability of vaccine services and supporting evidence. The term covers refusals to vaccinate, delaying vaccines, accepting vaccines but remaining uncertain about their use, or using certain vaccines but not others. Although adverse effects associated with vaccines are occasionally observed, the scientific consensus that vaccines are generally safe and effective is overwhelming. Vaccine hesitancy often results in disease outbreaks and deaths from vaccine-preventable diseases. Therefore, the World Health Organization characterizes vaccine hesitancy as one of the top ten global health threats.
Generation Rescue is a nonprofit organization that advocates the scientifically disproven view that autism and related disorders are primarily caused by environmental factors, particularly vaccines. The organization was established in 2005 by Lisa and J.B. Handley. Today, Generation Rescue is known as a platform for Jenny McCarthy's autism related anti-vaccine advocacy.
Arthur Krigsman is a pediatrician and gastroenterologist best known for his controversial research in which he attempted to prove that the MMR vaccine caused diseases, especially autism. He specializes in the evaluation and treatment of gastrointestinal pathology in children with autism spectrum disorders, and has written in support of the diagnosis he calls autistic enterocolitis. The original study that tied the MMR vaccine to autism and GI complaints conducted by one of Krigsman's associates has been found to be fraudulent, and the diagnosis of "autistic enterocolitis" has not been accepted by the medical community.
Brian S. Hooker a biologist and chemist who was department chair and Professor Emeritus of Biology at Simpson University. He is known for promoting the false claim that vaccines cause autism.
Jennifer Ann McCarthy-Wahlberg is an American actress, model, and television personality. She began her career in 1993 as a nude model for Playboy magazine and was later named their Playmate of the Year. McCarthy then had a television and film acting career, beginning as a co-host on the MTV game show Singled Out (1995–1997) and afterwards starring in the eponymous sitcom Jenny (1997–1998), as well as films including BASEketball (1998), Scream 3 (2000), Dirty Love (2005), John Tucker Must Die (2006), and Santa Baby (2006). In 2013, she hosted her own television talk show The Jenny McCarthy Show, and became a co-host of the ABC talk show The View, appearing on the program until 2014. Since 2019, McCarthy has been a judge on the Fox musical competition show The Masked Singer.
Claims of a link between the MMR vaccine and autism have been extensively investigated and found to be false. The link was first suggested in the early 1990s and came to public notice largely as a result of the 1998 Lancet MMR autism fraud, characterised as "perhaps the most damaging medical hoax of the last 100 years". The fraudulent research paper, authored by Andrew Wakefield and published in The Lancet, falsely claimed the vaccine was linked to colitis and autism spectrum disorders. The paper was retracted in 2010 but is still cited by anti-vaccine activists.
Andrew Jeremy Wakefield is a British fraudster, discredited academic, anti-vaccine activist, and former physician.
Autism spectrum disorders (ASDs) or autism spectrum conditions (ASCs) describe a range of conditions classified as neurodevelopmental disorders in the DSM-5, used by the American Psychiatric Association. As with many neurodivergent people and conditions, the popular image of autistic people and autism itself is often based on inaccurate media representations. Additionally, media about autism may promote pseudoscience such as vaccine denial or facilitated communication.
Warnings About Vaccination Expectations NZ (WAVESnz), formerly the Immunisation Awareness Society (IAS), is a New Zealand anti-vaccination lobby group.
Hear the Silence is a 2003 semi-fictional TV drama based around the discredited idea of a potential link between the MMR vaccine and autism. By then, a contentious issue, the supposed connection originated in a paper by Andrew Wakefield published in 1998. The film debuted on 15 December 2003 at 9 pm on the British network Five. Produced on a budget of £1 million, it stars Hugh Bonneville as Wakefield and Juliet Stevenson as Christine Shields, a fictional mother who discovers the possible MMR-autism link when her son is diagnosed as autistic.
John Walker-Smith is an Australian gastroenterologist well known for his work in pediatrics. From 1985 until his retirement in 2001, he was professor of pediatric gastroenterology at the University of London. He also formerly served as the editor-in-chief of the Journal of Pediatric Gastroenterology and Nutrition.
Vaxxed: From Cover-Up to Catastrophe is a 2016 American pseudoscience propaganda film alleging a cover-up by the Centers for Disease Control and Prevention (CDC) of a purported link between the MMR vaccine and autism. According to Variety, the film "purports to investigate the claims of a senior scientist at the U.S. Centers for Disease Control and Prevention who revealed that the CDC had allegedly manipulated and destroyed data on an important study about autism and the MMR vaccine"; critics derided Vaxxed as an anti-vaccine propaganda film.
The Lancet MMR autism fraud centered on the publication in February 1998 of a fraudulent research paper titled "Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive developmental disorder in children" in the Lancet. The paper, authored by now discredited and deregistered Andrew Wakefield, and twelve coauthors, falsely claimed causative links between the measles, mumps, and rubella (MMR) vaccine and colitis and between colitis and autism. The fraud involved data selection, data manipulation, and two undisclosed conflicts of interest. It was exposed in a lengthy Sunday Times investigation by reporter Brian Deer, resulting in the paper's retraction in February 2010 and Wakefield being struck off the UK medical register three months later. Wakefield reportedly stood to earn up to US$43 million per year selling diagnostic kits for a non-existent syndrome he claimed to have discovered. He also held a patent to a rival vaccine at the time, and he had been employed by a lawyer representing parents in lawsuits against vaccine producers.
Extensive investigation into vaccines and autism spectrum disorder has shown that there is no relationship between the two, causal or otherwise, and that vaccine ingredients do not cause autism. The American scientist Peter Hotez researched the growth of the false claim and concluded that its spread originated with Andrew Wakefield's fraudulent 1998 paper, and that no prior paper supports a link.
Del Matthew Bigtree is an American television and film producer who is the CEO of the anti-vaccination group Informed Consent Action Network. He produced the film Vaxxed: From Cover-Up to Catastrophe, based on the discredited opinions of Andrew Wakefield, and alleges an unsubstantiated connection between vaccines and autism. He served as communications director for Robert F. Kennedy Jr.'s 2024 presidential campaign and subsequently took a leading role in two groups associated with Kennedy's political career.
JABS is a British pressure group launched in Wigan in January 1994. Beginning as a support group for the parents of children they claim became ill after the MMR vaccine, the group is currently against all forms of vaccination.
Anti-vaccine activism, which collectively constitutes the "anti-vax" movement, is a set of organized activities proclaiming opposition to vaccination, and these collaborating networks have often fought to increase vaccine hesitancy by disseminating vaccine-based misinformation and/or forms of active disinformation. As a social movement, it has utilized multiple tools both within traditional news media and also through various forms of online communication. Activists have primarily focused on issues surrounding children, with vaccination of the young receiving pushback, and they have sought to expand beyond niche subgroups into national political debates.
