Get vaccinated even if an infection is still possible? A new study in Great Britain compares the risk of infection with and without a corona vaccination.
London – Corona is not over yet. The virus will keep the world in suspense for a long time to come – even if something like everyday life slowly returns in German cities. In view of the increasing number of infections, the highly contagious Delta variant in particular continues to cause concern and raises doubts for some: Does a vaccination still bring anything at all?
In Great Britain the effectiveness of the vaccine against the coronavirus can currently be observed well. The measures have been relaxed and, after a brief increase, the country has around 21,500 infected people per day (as of August 4th). Scientists from Imperial College in London have tested vaccinated and unvaccinated people for Covid-19 in several large-scale test series and have come to new study results.
Delta study: Unvaccinated people get Corona three times more often – no vaccination protects 100 percent
Accordingly, the number of coronavirus infections is “three times lower in those who are fully vaccinated” than in those who have not been vaccinated. A confirmation of the previous data, as the study director Paul Elliot explains in a publication from the university. The figures show “that a full vaccination offers good protection against becoming infected,” says Elliot. However, since no vaccine is 100% effective, there is still a certain risk for those who have been vaccinated.
In the regular test series of the “React-1” study, 1.2 percent of 100,000 unvaccinated subjects tested positive for the virus, while it was only 0.4 percent of the fully vaccinated. The results were published online in a pre-print paper on Wednesday and will continue to be reviewed by experts. As things stand so far, the numbers also suggest that the risk of transmission to others is significantly reduced by a double vaccination.
Corona study from England confirms: vaccination protection high even with Delta variant
The PCR tests of the study are carried out at regular intervals on selected random samples and thus provide a realistic picture of the corona development in England. 100 percent of the corona cases analyzed in the study were due to the delta variant.
The British study is not the first publication to suggest that the vaccine protection against delta infections is only slightly reduced. A team led by Jamie Lopez Bernal from the health authority Public Health England calculated the effectiveness of Biontech against a Delta infection at 88 percent, that of Astrazeneca at 67 percent. So far, the scientists have also assumed a milder Covid course for people who have been vaccinated. The Robert Koch Institute continues to advise caution despite the vaccination. (vs.)