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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Anti-vaccine activism | 4/8 | https://en.wikipedia.org/wiki/Anti-vaccine_activism | reference | science, encyclopedia | 2026-05-05T09:10:46.395880+00:00 | kb-cron |
==== 2019 and 2025 measles outbreaks ==== Vaccine hesitancy led to declining rates of vaccination for measles, culminating in the 2019–2020 measles outbreaks. The most significant of these, in proportion to the national population, was the 2019 Samoa measles outbreak. In July 2018, two 12-month-old children died in Samoa after receiving incorrectly prepared MMR vaccinations. These two deaths were picked up by anti-vaccine groups and used to incite fear towards vaccination on social media, causing the government to suspend its measles vaccination programme for ten months, despite advice from the WHO. The incident caused many Samoan residents to lose trust in the healthcare system. UNICEF and the World Health Organization estimate that the measles vaccination rate in Samoa fell from 74% in 2017 to 34% in 2018, similar to some of the poorest countries in Africa. In August 2019, an infected passenger on one of the more than 8,000 annual flights between New Zealand and Samoa probably brought the disease from Auckland to Upolu. A full outbreak of measles began on the island in October 2019 and continued for the next four months. As of January 6, 2020, there were over 5,700 cases of measles and 83 deaths, out of a Samoan population of 200,874. Over three percent of the population were infected. The cause of the outbreak was attributed to decreased vaccination rates, from 74% in 2017 to 31–34% in 2018, even though nearby islands had rates near 99%. a rate of 14.3 deaths per 1000 infected) and 5,520 cases (2.75% of the population) of measles in Samoa. Sixty-one out of the first 70 deaths were four years old and under, and all but seven were under 15. After the outbreak, anti-vaxxers employed racist tropes and misinformation to credit the scores of measles deaths to poverty and poor nutrition or even to the vaccine itself, but this has been discounted by the international emergency medical support that arrived in November and December. There was no evidence of acute malnutrition, clinical vitamin A deficiency, or immune deficiency as claimed by various anti-vaxxers. Skepticism about vaccines was similarly deemed a factor in the 2025 Southwest United States measles outbreak.
==== COVID-19 pandemic activism ====
During the COVID-19 pandemic, anti-vaccine activists undertook various efforts to hinder people who wanted to receive the vaccines, with such activities occurring in countries including Australia, Israel, the United Kingdom, and the United States. These included attempts to physically blockade vaccination sites, and making false reservations for vaccination appointments to clog up vaccination booking systems. Protests were also organized by the activists to raise awareness for their cause. In some instances, anti-vaccine rhetoric has been traced to state-sponsored internet troll activities designed to create social dissension. Worldwide, foreign disinformation campaigns have been associated with declining vaccination rates in target countries. Anti-vaccine activism online, both before and during the pandemic, has been linked to extreme levels of falsehoods, rumors, hoaxes, and conspiracy theories. Anti-vaccine activists have falsely claimed in social media posts that numerous deaths or injuries had to do with reactions to vaccines. In one highly publicized instance in early 2023, after Buffalo Bills football player Damar Hamlin experienced an in-game episode of commotio cordis, there was an increase in rhetoric and disinformation from figures such as Charlie Kirk and Drew Pinsky making unfounded claims about Hamlin's cardiac arrest and COVID-19 vaccines. In another 2023 incident, college basketball player Bronny James experienced cardiac arrest at the Galen Center at the University of Southern California, leading to assertions that this was a result of receiving a COVID-19 vaccine; it was later revealed that the episode had been caused by a congenital heart defect. Also, anti-vaccine activists believed Foo Fighters drummer Taylor Hawkins died in 2022 from the COVID-19 vaccine, while in actuality it was a drug overdose. In December 2023, The New York Times published a detailed investigation of the distortion and misrepresentation of the circumstances surrounding the death of 24-year-old George Watts Jr. by Robert F. Kennedy Jr. and other anti-vaccine activists. Some unvaccinated persons opposed to COVID-19 vaccination began referring to themselves in social media groups as "purebloods", a term historically connoting racial purity. Prominent biomedical researcher Peter Hotez asserted that he and other American scientists who publicly defend vaccines have been attacked on social media, harassed with threatening emails, intimidated, and confronted physically by opponents of vaccination. He further attributes the increase in aggressiveness of the anti-vaccination movement to the influence of the extreme wing of the Republican Party. Hotez estimates that roughly 200,000 preventable deaths from COVID-19, mainly among Republicans, occurred in the US because of refusal to be vaccinated. A 2023 study published in the Journal of the American Medical Association found "evidence of higher excess mortality for Republican voters compared with Democratic voters in Florida and Ohio after, but not before, COVID-19 vaccines were available to all adults in the US".
== Strategies and tactics ==
=== Arguments used === In a 2002 paper in the British Medical Journal, two medical historians suggested that the arguments made against the safety and effectiveness of vaccines in the late 20th century are similar to those of the early anti-vaccinationists. Both the 19th and 20th century arguments included "vaccine safety issues, vaccine failures, infringement of personal liberty, and an unholy alliance between the medical establishment and the government to reap huge profits for the medical establishment at the expense of the public." However, the authors only considered the use of "newspaper articles and letters, books, journals, and pamphlets to warn against the dangers of vaccination", and did not address the impact of the internet. Comments on YouTube videos during the COVID-19 pandemic clustered similarly around "concerns about side-effects, effectiveness, and lack of trust in corporations and government".