Study: COVID-19 booster shots are not just useless, they can even harm
Lancet published data on the futility of mass revaccination from COVID, reports RBC.
A group of scientists, including the leaders of WHO, said that if patients are given booster doses of vaccines too early or too often, it can cause myocarditis or Guillain-Barré syndrome.
Mass revaccination against coronavirus infection COVID-19 is now not necessary, and, on the contrary, can lead to side effects.
This conclusion was reached by an international team of scientists, including the Chief Scientist of the World Health Organization (WHO) Sumya Swaminathan and the Executive Director of the WHO Health Emergencies Program Michael Ryan.
Their article was published in The Lancet.
The study authors concluded that early revaccination against coronavirus could lead to side effects.
Experts emphasize that this applies to both mRNA vaccines and drugs based on adenovirus.
The report says that if booster doses are injected into the body too early or too often, it can cause myocarditis in the patient (in this case, we are talking about the introduction of mRNA vaccines, that is, drugs from Pfizer and Moderna), as well as syndrome Guillain-Barré (refers to adenovirus-based vaccines, including Sputnik V and AstraZeneca).
“While the benefits of primary vaccination against COVID-19 clearly outweigh the risks of contracting coronavirus, there may be other risks if boosters are widely introduced too early or too often, especially with vaccines that may have immune-mediated side effects,” the article says.
The new wave of COVID-19 caused by the delta strain has exacerbated the global public health crisis and made most governments think about the need for booster doses for the vaccinated population.
“While the idea of further reducing the number of COVID-19 cases by increasing immunity in vaccinated people is attractive, any decision to do so must be evidence-based and take into account the benefits and risks for individuals and society,” experts say.
According to them, claims that booster vaccinations may be required in the near future, if not supported by reliable data and analysis, could negatively affect the credibility of vaccines and undermine primary vaccination efforts.
“If boosters are ultimately to be used, it will be necessary to identify the specific circumstances in which the direct and indirect benefits of this will be clearly beneficial. Additional research can help determine these circumstances, ”the study authors note, adding that booster vaccinations may be needed for people with weakened immunity, as well as those who have not developed protection after the main vaccination.
At the same time, they emphasize that if a person has not developed immunity after the first vaccination, then the effect of the booster may also not occur.
In early August, the head of the World Health Organization, Tedros Ghebreyesus, recommended a moratorium on revaccination due to a shortage of coronavirus vaccines.
According to him, the WHO set a goal in May to vaccinate at least 10% of the population in every country in the world, and in highly developed countries this goal has already been exceeded.
Weeks later, Gebreyesus said booster vaccinations were morally wrong with vaccine shortages in low-income countries.
“When some countries can afford booster vaccinations, while others have not yet completed the first and second rounds of vaccination, it is morally wrong,” he said.
In the US, the WHO proposal was called "the wrong choice."
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The White House said it could provide vaccines to poor countries without stopping the revaccination at home.
In Russia, revaccination against COVID-19 began at the end of June.
It is carried out after six months have passed since the primary vaccination.
This procedure is supposed to be left until the country reaches 60% of herd immunity.
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