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Vaccination is the administration of a vaccine to help the immune system develop immunity from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism. In stimulating the body's adaptive immunity, they help prevent sickness from an infectious disease. When a sufficiently large percentage of a population has been vaccinated, herd immunity results. Herd immunity protects those who may be immunocompromised and cannot get a vaccine because even a weakened version would harm them. The effectiveness of vaccination has been widely studied and verified. Vaccination is the most effective method of preventing infectious diseases; widespread immunity due to vaccination is largely responsible for the worldwide eradication of smallpox and the elimination of diseases such as polio and tetanus from much of the world. According to the World Health Organization (WHO), vaccination prevents 3.5–5 million deaths per year. A WHO-funded study by The Lancet estimates that, during the 50-year period starting in 1974, vaccination prevented 154 million deaths, including 146 million among children under age 5. However, some diseases have seen rising cases due to relatively low vaccination rates attributable partly to vaccine hesitancy.
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.
Vaccination and religion have interrelations of varying kinds. No major religion prohibits vaccinations, and some consider it an obligation because of the potential to save lives. However, some people cite religious adherence as a basis for opting to forego vaccinating themselves or their children. Many such objections are pretextual: in Australia, anti-vaccinationists founded the Church of Conscious Living, a "fake church", leading to religious exemptions being removed in that country, and one US pastor was reported to offer vaccine exemptions in exchange for online membership of his church.
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.
A vaccination policy is a health policy adopted in order to prevent the spread of infectious disease. These policies are generally put into place by state or local governments, but may also be set by private facilities, such as workplaces or schools. Many policies have been developed and implemented since vaccines were first made widely available.
Robert William Sears, known as Dr. Bob, is an American pediatrician from Capistrano Beach, California, noted for his unorthodox and dangerous views on childhood vaccination. While Sears acknowledges the efficacy of vaccines—for instance, he supports the claim that Chicken pox, measles, whooping cough, polio, diphtheria have all disappeared because of vaccines—he has proposed alternative vaccination schedules that depart from accepted medical recommendations. His proposals have enjoyed celebrity endorsement but are not supported by medical evidence and have contributed to dangerous under-vaccination in the national child population. While he denies being anti-vaccine, Sears has been described by many as anti-vaccine and as a vaccine delayer.
Jay N. Gordon is an American pediatrician, lecturer, and author. He is well-known within the anti-vaccine movement for his promotion of vaccine hesitancy. He does encourage vaccinating but at the discretion of the parent. He is also a long-time advocate of breastfeeding; he became a member of the International Health Advisory Council of the La Leche League in 2005.
Measles is extremely contagious, but surviving the infection results in lifelong immunity, so its continued circulation in a community depends on the generation of susceptible hosts by birth of children. In communities which generate insufficient new hosts the disease will die out. This concept was first recognized by Bartlett in 1957, who referred to the minimum number supporting measles as the critical community size (CCS). Analysis of outbreaks in island communities suggested that the CCS for measles is c. 250,000. Due to the development of vaccination against measles, the world has seen a 99% decrease in measles related cases compared cases before the vaccine was developed.
Melanie's Marvelous Measles is a self-published children's book written by Australian author and anti-vaccine activist Stephanie Messenger. Through its story, the book claims, contrary to scientific data, that contracting measles is beneficial to health, and that vaccines are ineffective.
Stephanie Frances Bailey, more commonly known by the Australian Registered Business Name Stephanie Messenger, is an anti-vaccination activist, lecturer and author from Brisbane, Australia who believes her son was killed by vaccination. She writes children's books focusing on health and social issues, her most noteworthy being Melanie's Marvelous Measles which was published in 2012 but received considerable media attention after the Disneyland measles outbreak in 2014. Messenger organised a 2015 lecture tour of Australia for fellow anti-vaccinationist Sherri Tenpenny. The tour was cancelled due to public outcry over the anti-vaccination stance of the tour.
Dorit Rubinstein Reiss is a Professor of Law and the James Edgar Hervey '50 Chair of Litigation at UC Hastings College of Law. She has also worked for the Hebrew University of Jerusalem and the Israeli Ministry of Justice's Department of Public Law.
In early months of 2019, a measles outbreak occurred in the Portland metropolitan area, including the Clark County, Washington suburbs, in the United States. At the time, the outbreak was the largest outbreak in more than two decades; outbreaks in 2019 in areas including Brooklyn and Rockland County, New York have since seen far greater numbers of cases.
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.
Measles was declared eliminated from the United States in 2000 by the World Health Organization due to the success of vaccination efforts. However, it continues to be reintroduced by international travelers, and in recent years, anti-vaccination sentiment has allowed for the reemergence of measles outbreaks.
The 2019 New York City measles outbreak was a substantial increase in the number of measles cases reported in the state of New York, primarily in New York City and neighboring Rockland County, New York in 2019, relative to the previous year.
Vaccination policy of the United States is the subset of U.S. federal health policy that deals with immunization against infectious disease. It is decided at various levels of the government, including the individual states. This policy has been developed over the approximately two centuries since the invention of vaccination with the purpose of eradicating disease from the U.S. population, or creating a herd immunity. Policies intended to encourage vaccination impact numerous areas of law, including regulation of vaccine safety, funding of vaccination programs, vaccine mandates, adverse event reporting requirements, and compensation for injuries asserted to be associated with vaccination.
The 2019 Samoa measles outbreak began in September 2019. As of 6 January 2020, there were over 5,700 cases of measles and 83 deaths, out of a Samoan population of 200,874. Over three per cent of the population were infected. The cause of the outbreak was decreased vaccination rates among newly born babies, from 74% in 2017 to 31–34% in 2018, even though nearby islands had rates near 99%.
Taylor Winterstein is an Australian-Samoan online influencer and conspiracy theorist best known for her public anti-vaccination stance. Winterstein has been heavily criticised in several South Pacific, and Australasian countries for her anti-vaccination rhetoric and her seminars have been called "irresponsible" by the Australian Medical Association and a "public health threat" by the Samoan Ministry of Health. She claims she has not encouraged non-vaccination, rather, "informed consent" and "freedom of choice".
Misinformation related to immunization and the use of vaccines circulates in mass media and social media in spite of the fact that there is no serious hesitancy or debate within mainstream medical and scientific circles about the benefits of vaccination. Unsubstantiated safety concerns related to vaccines are often presented on the internet as being scientific information. A large proportion of internet sources on the topic are mostly inaccurate which can lead people searching for information to form misconceptions relating to vaccines.
The Disneyland measles outbreak began at the Disneyland Resort, California, in December 2014, and spread to seven states in the United States, Mexico, and Canada, before it was declared over in mid-April 2015.
References
- ↑ "Escondido dos pais, jovem espera completar 18 anos para poder se vacinar". revistagalileu.globo.com (in Portuguese). 2019-02-20.
- ↑ "Coming of Age Unvaccinated". Undark. 2019-02-06.
- 1 2 "Unvaccinated teens are fact-checking their parents — and trying to get shots on their own". Washington Post. 2019-02-11.
- ↑ "Teen has vaccinations after asking Reddit". BBC. 2019-02-11.
- ↑ "Defying Parents, A Teen Decides To Get Vaccinated". NPR.org.
- ↑ "Lack of options for teen with anti-vaxx parents is heartbreaking". www.indy100.com. 2019-01-29. Archived from the original on 2019-03-06. Retrieved 2019-03-06.
- ↑ Full Frontal, with Samantha Bee (3 April 2019). "Anti-Anti-Vaxxers April 3, 2019 Act 2 Full Frontal on TBS". Youtube. Retrieved 21 May 2019.
- ↑ "Ethan Lindenberger's vaccine debate heads to congress". News-Medical.net. 2019-03-04.
- ↑ "Ethan Lindenberger, who got vaccines against his anti-vax mom's wishes, will speak in front of the Senate Tuesday". Newsweek. 2019-03-05.
- ↑ Rodríguez, Adrianna (13 February 2019). "For his 18th birthday this teen got himself vaccinated, despite mom's objections". WKYC.com. WKYC-TV . Retrieved 2020-01-14.
- ↑ "Vaccines Save Lives: What Is Driving Preventable Disease Outbreaks?". The U.S. Senate Committee on Health, Education, Labor & Pensions. 2019-03-05.
- ↑ "This teen got vaccinated against his mother's wishes. Now, he'll testify before Congress". Washington Post.
- ↑ "An 18-Year-Old High School Student Explained Why He Got Vaccinated Against His Mother's Wishes In Testimony Before Congress". BuzzFeed News. 5 March 2019.
- ↑ "Teen who defied mother by getting vaccinated testifies before Congress". www.cbsnews.com. 2019-03-05.
- ↑ "'Propagating These Lies Is Dangerous': Ohio Teen Vaccinated Against His Mother's Wishes Calls for End to Misinformation". Time. 2019-03-05.
- ↑ "I defied mother to get vaccinated for safety of me and others, US teen says". The Guardian. 2019-03-05.
