MRNA technology is used by Pfizer / BioNTech and Moderna. MRNA vaccines differ from traditional ones in that they do not contain any dead or attenuated pathogens, but genetic information of the virus. This method is compared to a guide for the body to make its own antibodies.
According to the researchers, it is likely that people vaccinated with Pfizer / BioNTech and Moderna will be protected from severe covid-19 for many years. At the same time, the protection of people who underwent covid-19 and were subsequently vaccinated is more permanent – it could be lifelong.
“This is a good sign of how resilient our immunity is to this vaccine,” immunologist Ali Ellebeda of Washington University in St. Petersburg told The New York Times about the results of the study. Louis, who directed the study.
However, the researchers only consider existing coronavirus variants. However, according to experts, these are still increasing, and some of them could eventually prove resistant to the immunization provided by current vaccines. If this happens, revaccination will probably be needed.
Researchers at Oxford University said in a study published today that people who received a third dose of AstraZeneca in clinical trials had more antibodies than after the second dose. Researchers see this as a positive development, as it shows that in the event of declining protection, immunity can be strengthened again with another injection.
However, it is not yet clear how long the protection will take after two doses of AstraZeneka, scientists hope that it will be at least a year or more.
Researchers have not yet come to a conclusion about the durability of protection after the Johnson & Johnson vaccine, which is approved, for example, in the USA and the EU and which is also administered in limited quantities in the Czech Republic. However, according to immunologist Ellebedy, the response of the immune system is likely to be shorter than that of vaccines with mRNA technology.
Source: EuroZprávy.cz by eurozpravy.cz.
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