Media pressure on chiropractors advocating against vaccinations has led to the removal of vaccine-related information from their websites.
A McMaster University study has found that a small minority of chiropractors provide vaccine information on their websites. In the past three years, half of the online vaccination information, mostly negative, has been removed from surveyed websites of the regulated health-care group.
The details of the study were published in Canadian Medical Association Journal (CMAJ) Open.
Principal investigator Jason Busse, a chiropractor himself, says the removal of vaccine information from chiropractors’ websites was associated with a large increase in Canadian media coverage of the topic.
“The Canadian media has drawn attention to anti-vaccination statements by some chiropractors, and that seemingly had a large impact on curbing publication of such online material,” said Busse, associate professor in the departments of anesthesia, and of health research methods, evidence, and impact at McMaster.
“While this is laudable, chiropractic regulatory colleges should monitor chiropractors’ websites and social media accounts for misleading information and enforce their standards of practice.”
He added that, with approximately 9,000 practitioners, chiropractic is Canada’s third-largest regulated health-care profession.
“Historically, some prominent chiropractors have been extremely critical of vaccination, and a number of traditional practitioners maintain these attitudes,” he said.
The research team conducted a prospective cohort study focused on Canadian chiropractors’ websites between July 2016 and April 2019.
As of July 2016, the team identified 94 unique sites maintained by Canadian chiropractors that provided information on vaccination. Of these sites, almost two-thirds (63 per cent) were critical of vaccination, 20 per cent were neutral, and the rest (17 per cent) were supportive of vaccination.
The quality of vaccination content present on chiropractor’s websites was generally poor with a median Web Resource Rating Tool score of 19 per cent.
The four main themes identified on the sites offering vaccination information were that there are alternatives to vaccination; that vaccination is harmful; mixed evidence regarding vaccination, and concerns regarding vaccination policy.
Researchers also focused in on Canadian media coverage and potential impact on the chiropractors’ websites.
Between 2012 to 2016, they identified one Canadian newspaper story concerning anti-vaccination statements by chiropractors. However, between 2017 and 2019 there were 51 news articles published on this topic.
Researchers revisited all identified websites from 2016 in April 2019 to explore changes to posted vaccination material. Approximately three years after a number of Canadian media outlets began exploring anti-vaccination statements by some chiropractors, almost half of the websites identified in 2016 (47 per cent) had been discontinued or all content regarding vaccination had been removed.
Following media attention, the College of Chiropractors of Ontario standard was amended in 2018 and 2019 to prohibit chiropractors from providing information on vaccination on a member’s website or social media account.
In December 2019, the Canadian Chiropractic Association updated their position statement to explicitly state that vaccination is a safe and effective public health practice for the prevention of infectious diseases.
Busse urges collaboration between physicians, public health and chiropractic associations.
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