Corona study shows: Booster vaccination significantly slows down the infection
If you want to protect yourself and others from Covid-19, the booster offers the best protection. Scientists from Geneva have now published a study on this.
According to the current state of science, vaccinated people suffer less often from long-term health consequences after a vaccination corona*-Illness. And only those who have been vaccinated have boosted antibodies against different variants of the virus after an omicron infection. But vaccination protection goes even further: vaccinated people with breakthrough infections are less contagious than non-vaccinated reports merkur.de*. This is shown by a comprehensive analysis by virologists from the University of Geneva, which is now in the specialist magazine naturopathy has been published.
However, it is needed for infections omicron* three doses of vaccine for the protection of others. The results clearly show that the vaccination does not reliably prevent severe courses, but also curbs the spread of the virus in the population, the authors of the study, the virologist Isabella Eckerle and the virologist Benjamin Meyer, are quoted as saying.
Omicron: Booster vaccination has an impact on the course of infection
The research team has had samples from 565 vaccinated and unvaccinated people with a Sars-CoV-2 infection* and milder symptoms collected. The team analyzed the viral load in the first five days after the onset of symptoms and documented the virus variants responsible.
The evaluation of the data once again showed the importance of the booster vaccination, especially with regard to Omicron: those who had been vaccinated twice with a breakthrough infection had a similarly high viral load as those who had not been vaccinated. According to the study, on the other hand, the number of infectious particles in the nasopharynx was around five times lower in people with booster protection.
Corona study from Geneva shows: Vaccinated people push back Delta variant faster
The team also looked at infectious particle counts in symptomatic disease using the Delta variant. Those who had already been vaccinated twice had a virus quantity in their bodies that was reduced to one fifth compared to those who had not been vaccinated nose and throat*. This means these are less contagious. In addition, the body of double-vaccinated people was able to suppress the virus more quickly within the five days observed, so researchers continue to die.
It is striking that twice vaccinated with delta infection* had a higher number of infectious particles than those infected with omicron, although omicron is more contagious than delta, the researchers say Mirror online quoted.
Corona study shows: Omicron takes a different route into the cell than the delta variant
The researchers also observed that the high transmissibility of omicron was not caused by a higher number of infectious particles in vaccinees. According to the research team, one reason for this could be that omicron penetrates cells in a different way than the Delta virus variant. However, it is also conceivable that the peak of virus multiplication in omicron infections is reached quite early. And above all, Omikron uses its ability to circumvent the protection against infection after a vaccination or infection more effectively than the Delta variant.
As an important result of the study, the researchers state that vaccinations have a positive effect – beyond individual protection against serious illnesses – and in this context also underline the importance of booster vaccinations. However, they do not yet see precise evidence of the viral load at which an infected person can infect another person. According to the researchers, this also depends on many external influences such as the duration and proximity of the contact.
Immunologists have recently repeatedly emphasized that healthy adults are very well protected against severe Covid 19 disease with three vaccine doses* are. It is still unclear how long the protection against serious illness lasts after three doses of the vaccine. to die Standing vaccination committee Stiko recommends a booster vaccination after six months* for everyone aged 18 and over. *Merkur.de is an offer from IPPEN.MEDIA.
List of rubrics: © Lino Mirgeler/dpa