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Revaccination against coronavirus: when to get boosted
Revaccination against coronavirus: when to get boosted
Anonim

Despite the fact that the rates of vaccination against coronavirus in Russia differ from those planned, there are already many people who have been vaccinated for a long time and are thinking about revaccination. We collected all the information about the booster vaccine, based on official information and accumulated scientific data.

Revaccination against coronavirus: when to get boosted

How and with what to be revaccinated?

Revaccination has been officially launched in Russia since July 1. According to the recommendations of the Ministry of Health, someone who was vaccinated more than six months ago and also had covid more than six months ago can be re-vaccinated. You can revaccinate with the same vaccine that was used for the primary vaccination, or you can use a different one.

The Russian Ministry of Health believes that in the future, when the epidemic subsides, it will be necessary to vaccinate once a year, similarly with influenza vaccination all over the world.

In the USA, Great Britain, Canada and Germany, re-vaccination of those who have been ill and vaccinated are also carried out.

Now in Russia there are three vaccines available: this is "Sputnik V" of the Center. Gamalei, "EpiVacCorona" from "Vector" and "KoviVak", created by the specialists of the Center. Chumakov. These drugs are two-component - each dose must be administered separately, with a break of at least 21 days. In addition, the Sputnik Light vaccine was registered, it is a one-component preparation, the first dose of a full-fledged Sputnik.

Previously, there was information that the vaccine may be disposable, that is, its repeated use will no longer provide protection. But the accumulated data refutes this point of view: it is already clear that the coronavirus vaccine can be vaccinated more than once.

Experts and scientists "vote" for "Sputnik V" as the vaccine that is now considered the most studied. Its effectiveness is proven better than others, and the results of the study are published in reputable scientific journals. Nowadays, Sputnik Light is mainly offered for revaccination, but you can choose any available drug. Vaccination is done in Russia free of charge and is available to all people over 18 years of age with a compulsory medical insurance policy.

For those who are not sure about the effectiveness of the Sputnik V vaccine, we recall that this drug is used not only in Russia. It was Sputnik that was used for vaccination in San Marino, and is now used in Argentina and Brazil. If there were serious problems with the vaccine, it would definitely become known, because the sample on which it is used is very large.

Do I need to get tested for antibodies before booster vaccination?

You do not need to take any tests before vaccination, and if you have passed them, then you definitely do not need to interpret the results. It has been scientifically proven that the presence of protective antibodies does reduce the chances of getting covid. But at present, no one knows exactly what the level of antibodies must be in order to protect against infection. At the same time, statistics show that the level of antibodies decreases over time, just to restore it, a re-vaccination is necessary.

Scientists from Australia published a study in the most authoritative journal Nature in May 2021: they studied how often people vaccinated with different vaccines get sick with covid. Among them was the Russian "Sputnik V", which is used for vaccination not only in Russia. The conclusion was quite straightforward: the higher the level of antibodies, the more reliable and higher the protection.

Researchers from St. Petersburg are conducting their research, and they have already found out that in those who already had protective antibodies in the body - after vaccination or a previous coronavirus infection, revaccination will cause a faster increase in the concentration of antibodies.This means that the body will quickly come on alert and, if necessary, will be able to ward off the infection.

However, the protective effect of vaccination is associated not only with the formation of antibodies circulating in the blood, but also with the so-called T-cell immunity. Analyzes for its study also exist, but there is no scientifically confirmed data demonstrating exactly what it should be.

Why get vaccinated if the virus mutates all the time?

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Recommendations to revaccinate have appeared in different countries. The scientific community is convinced that the possible negative consequences of vaccination against coronavirus are much less than the benefits of such vaccination.

Even though the virus is constantly changing, vaccination helps to provide protection against infection and severe illness. The delta strain is currently considered the most dangerous, but even the vaccine works against it. It has been proven that vaccinated people get sick less often, and if they do get infected, then their illness is easier, often goes away without hospitalization.

But who is against revaccination, what to do?

Experts from the World Health Organization did indeed oppose revaccination. They explained that it is better not to waste the vaccine on re-introduction, but to send it to poor countries where vaccination is too slow. WHO proposed to impose a moratorium on revaccination until at least 10% of the population is vaccinated in these countries, including Chad, Turkmenistan, Mauritania and some others. Currently, the proportion of those vaccinated from them is calculated in tenths of a percent.

However, most countries rejected the idea of ​​a moratorium - and revaccination in them is in full swing.

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