In some countries of the world, another revaccination campaign and the distribution of so-called booster vaccinations have begun. However, the head of the pharmaceutical company AstraZeneca believes that the fourth injection is optional.
A number of scientists are convinced that booster vaccinations are extremely important for people who have never experienced a positive test for coronavirus. If you have not been infected with covid within the last year, you have received protection from previous injections. This means that the level of protective antibodies should be raised precisely through vaccination. The more people who are protected, the less the coronavirus will circulate, thereby reducing the risk of developing new strains.
Revaccination will be needed every winter
Oddly enough, doubts about the advantage of the booster company were expressed by a person who should be as interested in it as possible. This is Pascal Soriot, CEO of AstraZeneca, a pharmaceutical company that produces vaccines. He argued that giving vaccines to healthy people again is not a good use of money, since previous vaccinations also provide long-term protection. Nottingham University virologist Will Irving disagrees.
Immunologist Prodeus explained who does not need a six-month revaccination
The scientist said that many people where they have already received three injections, and also had coronavirus twice or thrice. Their immune memory is sufficient for long-term protection. But the problem is that we don't know how long this immune memory lasts. And another dose of the vaccine is a good idea, at least for people at risk. (READ MORE) 
Pascal Soriot Medicine CEO of pharmaceutical company AstraZeneca