FROM WHEN, HOW LONG AND AGAINST WHAT IT IS EFFECTIVE – How good is the protection after the Corona vaccination?

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More contact and no exit restrictions: Calls for relaxation for vaccinated people are growing louder. But what protection does a Covid 19 vaccination even offer?

All four Covid-19 vaccines approved so far in Europe are equally effective at protecting individuals and containing the pandemic, according to authorities and experts. They are believed to prevent much of the severe and potentially fatal disease. But exactly how good is the protection after Corona vaccination?
Which Corona vaccine protects well against the virus?
Depending on the vaccine, the likelihood of contracting Covid-19 decreases significantly in vaccinated individuals compared to unvaccinated individuals….

By up to 70 percent with Johnson & Johnson’s vector-based vaccine,
up to 80 percent with AstraZeneca, and up to a maximum of 95 percent for the mRNA preparations from BioNTech/Pfizer and Moderna.
With three of the four vaccines available so far, two doses are necessary for full protection. According to virologists there should be six weeks in between for mRNA vaccines and twelve weeks for Astrazeneca.

When does protection begin after Corona vaccination?

Protection does not begin immediately after the shot. It exists with BioNTech/Pfizer from day 7 after the second vaccination,
with Moderna from day 14 and AstraZeneca from day 15.
After the single dose from Johnson & Johnson, protection exists from day 28. It is not yet possible to say how long vaccinated persons will remain protected.

Can vaccinated people spread the coronavirus further?
It is assumed that fully vaccinated people play a smaller role as carriers of the virus than unvaccinated people. According to a study published by the University of Oxford, presumably, there is a greatly reduced excretion of virus in people who have become infected despite being vaccinated twice. To a limited extent, however, they still seem to be able to pass on an infection. Therefore, even those who have been vaccinated are advised to continue to adhere to protective measures.

What about protection after the first Corona vaccination?
People also benefit from the first dose of vaccine, according to one study – and regardless of whether they received BioNTech/Pfizer or AstraZeneca. A large-scale study by the University of Oxford in cooperation with the U.K.’s Office for National Statistics (ONS) and the country’s Department of Health recently showed that the risk of corona infection dropped by 65 percent three weeks after vaccination, the university recently announced.

How good is protection against virus variants?
Regarding the role of viral variant B.1.1.7, the Austrian Vaccination Committee said that all of the vaccines licensed in Europe offered “very good protection against symptomatic disease.” The protective effect against symptomatic disease by the B.1.351 mutant discovered in South Africa, however, was “significantly reduced”; this variant has consistently accounted for a very small proportion.

  • hp/picture: unsplash.com
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