.It is impossible for the delta variant to have been caused by vaccines.Det räcker egentligen med det första här. Alla varianter har uppstått i regioner och bland populationer som har varit ovaccinerade eller med mycket liten grad av täckning. Vi fortsätter dock:
This virus mutation was detected for the first time in October 2020 in the Indian state of Maharashtra. The first person in India to be vaccinated, however, did not receive that vaccination until January 2021, around three months after the delta variant developed. This refutes the claims mentioned at the beginning.
This fact check explains how mutations come about and why vaccines cannot be held responsible for them.
Do vaccines cause virus mutations?Den lilla teoretiska risken med en befolkning delvis vaccinerade motbevisas i huvudsak av observationer man gjort när det gäller ursprunget för mutationerna:
Virologist Friedemann Weber from Justus Liebig University in the western German city of Giessen told DW that it was not the vaccinated who gave rise to new escape mutations and variants, but the unvaccinated: "It was infected people who provided a breeding ground for the new variant and immune escape of the virus."
A glance at India, Brazil, and South Africa shows this, he said. According to Weber, this is where the mutations that are now widespread arose and where the percentage of people vaccinated was very low.
The coronavirus was widespread in all three countries at the time the mutations presumably occurred. This provides ideal conditions for new mutations, said Weber, because the virus uses the weakened immune system in many infected people to adapt better and bypass the immune system.
The claim that vaccines are responsible for mutations is shown to be at least misleading if you look at the countries with high ratios of vaccinated people: If vaccinations massively increased the likelihood of a virus mutating, then new virus mutations would already be appearing in countries like Israel or the UK, where many people have already received their jabs, Peggy Riese says.
"But this is not the case at all. The virus mutations occur precisely in those countries where there is not yet a high (vaccination) rate, and a large number of people are meeting together within a confined area," she told DW.
Theoretically, however, there is the possibility that vaccinations exert an immunological pressure on the virus, says Georg Behrens. "Then it tries to escape this pressure through such a mutation," he said.https://www.dw.com/en/fact-check-did-covid-vaccines-cause-the-delta-variant/a-58242263
That is because the virus is currently encountering populations that are only partially vaccinated. As a result, some people have an immune response, while others still offer the possibility of becoming infected. "That's what the virus loves," said Behrens. "And this can lead to other mutations. This is how the virus trains itself, basically."
In summary: In very rare cases, vaccinations can cause mutations to arise and theoretically promote their spread, but it is much more likely that dangerous mutations are created where a virus can spread quickly and unhindered.
It is impossible for the delta variant to have been caused by vaccines.Det räcker egentligen med det första här. Alla varianter har uppstått i regioner och bland populationer som har varit ovaccinerade eller med mycket liten grad av täckning. Vi fortsätter dock:
This virus mutation was detected for the first time in October 2020 in the Indian state of Maharashtra. The first person in India to be vaccinated, however, did not receive that vaccination until January 2021, around three months after the delta variant developed. This refutes the claims mentioned at the beginning.
This fact check explains how mutations come about and why vaccines cannot be held responsible for them.
Do vaccines cause virus mutations?Den lilla teoretiska risken med en befolkning delvis vaccinerade motbevisas i huvudsak av observationer man gjort när det gäller ursprunget för mutationerna:
Virologist Friedemann Weber from Justus Liebig University in the western German city of Giessen told DW that it was not the vaccinated who gave rise to new escape mutations and variants, but the unvaccinated: "It was infected people who provided a breeding ground for the new variant and immune escape of the virus."
A glance at India, Brazil, and South Africa shows this, he said. According to Weber, this is where the mutations that are now widespread arose and where the percentage of people vaccinated was very low.
The coronavirus was widespread in all three countries at the time the mutations presumably occurred. This provides ideal conditions for new mutations, said Weber, because the virus uses the weakened immune system in many infected people to adapt better and bypass the immune system.
The claim that vaccines are responsible for mutations is shown to be at least misleading if you look at the countries with high ratios of vaccinated people: If vaccinations massively increased the likelihood of a virus mutating, then new virus mutations would already be appearing in countries like Israel or the UK, where many people have already received their jabs, Peggy Riese says.
"But this is not the case at all. The virus mutations occur precisely in those countries where there is not yet a high (vaccination) rate, and a large number of people are meeting together within a confined area," she told DW.
Theoretically, however, there is the possibility that vaccinations exert an immunological pressure on the virus, says Georg Behrens. "Then it tries to escape this pressure through such a mutation," he said.https://www.dw.com/en/fact-check-did-covid-vaccines-cause-the-delta-variant/a-58242263
That is because the virus is currently encountering populations that are only partially vaccinated. As a result, some people have an immune response, while others still offer the possibility of becoming infected. "That's what the virus loves," said Behrens. "And this can lead to other mutations. This is how the virus trains itself, basically."
In summary: In very rare cases, vaccinations can cause mutations to arise and theoretically promote their spread, but it is much more likely that dangerous mutations are created where a virus can spread quickly and unhindered.
/.../In a telephone interview the next day, Dr. Fauci acknowledged that he had slowly but deliberately been moving the goal posts. He is doing so, he said, partly based on new science, and partly on his gut feeling that the country is finally ready to hear what he really thinks.https://www.nytimes.com/2020/12/24/health/herd-immunity-covid-coronavirus.html
Hard as it may be to hear, he said, he believes that it may take close to 90 percent immunity to bring the virus to a halt — almost as much as is needed to stop a measles outbreak.
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