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Japanese researcher Tasuku Honjo, winner of the 2018 Nobel Prize in Medicine, said Thursday that the universal vaccine against tuberculosis (TB), administered in Japan, could be one of the reasons for the low mortality rate among patients with COVID -19 in this country. , reports EFE, quoted by Agerpres. In Romania, the BCG vaccine has been part of the national vaccination scheme since communism.
The link between vaccination known as BCG (Calmette-Guérin bacillus logo) and a lower death rate from COVID-19 was initially revealed by a group of Australian scientists, and now researchers around the world are trying to ” verify this connection. ” Honjo said in a conference call.
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According to this immunology expert, the fact that the majority of Japan’s population is vaccinated against tuberculosis “could be one of the differentiating factors” that explain the low percentage of coronavirus infections in this country.
The BCG vaccine “represents a strong boost to general immunity” by inoculating it into the body and, therefore, “could be” very useful in slowing down the coronavirus, due to the reaction against this pathogen in the immune system. “It is a theory for now, it will have to be verified. I know that many researchers are working on it and we expect the conclusions soon,” said Honjo.
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One of these studies, carried out by the Fujita Health University in Aichi (central Japan), analyzed the number of infections and deaths from COVID-19 in 136 countries, divided between those that apply the universal BCG vaccine or the application of this policy. . in the past, and those who were not vaccinated.
The results of the study, published in mid-April, show a “significant relationship” between vaccination policies against tuberculosis and the prevalence and mortality rates of COVID-19.
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The researchers found higher death rates in countries that have never administered the BCG vaccine to the population, such as the United States or Italy, followed by countries that have used universal vaccination in the past, such as Germany, Australia, or South Korea.
Lower death rates have been recorded in countries such as Japan or Russia, where the vaccine is still administered to the public.
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To explain the apparent success of Japan and other Asian countries in controlling the pandemic, Honjo also highlighted the genetic difference between Europeans and Asians as a possible reason. According to him, they are human leukocyte antigens (HLA), a set of hereditary molecules that play a key role in the immune system and reveal “enormous differences between Caucasians and Asians.”
These genetically controlled molecules “are the basic principle for recognizing the enemy” of the body, said Honjo, adding that “we still have to wait” to test this hypothesis.
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Japanese researcher Tasuko Honjo received the 2018 Nobel Prize in Medicine with American scientist James P. Allison for discovering cancer therapy by inhibiting the negative immune response, ” an entirely new principle that helps stimulate self-defense. Body.
Countries that have established national BCG vaccination programs with BCG have a 6-fold lower death rate from COVID-19. The statement comes from researchers at Johns Hopkins University. In Romania, the BCG vaccine is part of the national vaccination scheme. Researchers at Johns Hopkins University in Baltimore, Maryland have found a link between populations vaccinated against tuberculosis, COVID-19 and deaths from the disease, reports Mediafax.
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According to them, countries where vaccination with Bacillus Calmette-Guerin (BCG) is part of the vaccination scheme have an even 6 times lower mortality rate caused by COVID-19.
The not-so-expensive BCG vaccine was introduced a few decades ago and has been protecting against tuberculosis for 60 years, say pulmonologists and epidemiologists.
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In the UK, writes the Daily Mail, all children between the ages of 10 and 14 were vaccinated with BCG between 1953 and 2005. For 15 years, the vaccination schedule has changed and the vaccine is administered only to those at highest risk of disease.
The BCG vaccine is given to about 130 million children a year. The administered bacillus is attacked by the immune system, which produces the necessary antibodies to stop a possible TB disease in the future.
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Several countries around the world, including Australia, are currently studying the effectiveness of the BCG coronavirus vaccine. Four thousand people in the Australian medical system are participating in the tests.
Romania has included BCG vaccine in the national vaccination scheme since the communist period. Many know it as the vaccine that leaves a poppy-shaped scar on the shoulder.
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