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The good news about vaccines has given rise to optimism in the world, which has become discouraged and believes that in a short time we will say goodbye to all the restrictive measures that have changed our day to day.
Many people think that we will not need to wear masks after the vaccine. However, experts put a damper on hopes of a daily life without masks in the near future.
Western vaccines can be effective in preventing serious illness with Covid-19, but it is not certain that they completely prevent the virus itself.
These are the main reasons why we will need to wear masks for a long time.
Some vaccines need two doses
Some of the early coronavirus vaccines require two doses. The second dose of the Pfizer vaccine is given three weeks after the first and Moderna four weeks later.
Between the two doses, as pharmaceutical companies warn, the human body is not yet protected from the coronavirus. But even after the second dose, it takes some time.
A type of protection is expected to develop two weeks after the first dose, but complete immunity will develop at least two weeks after the second dose.
Vaccines may not protect against SARS-CoV-2 infection
However, the main reason we will need to wear a mask even after vaccination is that it is not known whether Western vaccines prevent infection and the spread of the coronavirus.
In trials by Pfizer and Moderna, their vaccines have been shown to be particularly effective in preventing serious coronavirus disease. However, it is not known if you can contract the coronavirus after the vaccine.
Thus, it is very possible that some of those who have been vaccinated become infected with the coronavirus and are asymptomatic, thus transmitting the virus and putting those who have not been vaccinated at risk.
In fact, vaccinated people can have a high viral load and be asymptomatic. In this way, they will be able to spread the coronavirus even more because they will have the false sense of security.
In the monkey trials, some vaccinated animals did not get sick, but had the virus in their noses. However, these monkeys were exposed to very high amounts of the virus, but still had a lower viral load than animals that had not been vaccinated.
However, AstraZeneca has announced that some of its volunteers have been tested for coronavirus and the results may indicate that the vaccine may prevent infection in some cases.
Pfizer will check if any of its volunteers have developed antibodies against the viral protein N. Since vaccines do not cover this protein, the presence of N antibodies will indicate whether the volunteers were infected with the virus after being vaccinated. Moderna claims to do the same.
Vaccination will take time
It will take months, perhaps years, until the entire population of Earth is vaccinated and we achieve a sufficient percentage of herd immunity. Until then, then, we should wear masks.
After all, vaccine trials in children have only just begun. So minors certainly won’t be the first on the list to get vaccinated.
Nasal vaccines will be more effective
In most respiratory diseases, such as the coronavirus, the nose is the main entry point for the germ into the body. For this reason, after all, we wear masks that cover our nose and mouth.
Current vaccines against coronavirus are injected into the shoulder and mobilize our immune system to produce antibodies. In the event of reinfection, however, it is not known with certainty how many and how quickly these antibodies will reach our noses, where large amounts of the virus accumulate and multiply.
Therefore, nasal vaccines or nasal spray vaccines will be more effective in preventing infections.
The new generation of coronavirus vaccines will be nasal. This will produce antibodies and strong “shields” right at the most dangerous entry point for the virus. From the nose, the antibodies will travel faster and more easily to the pharynx and lungs.
However, scientists are optimistic that current vaccines will significantly suppress the spread of the virus in the nose and throat so that those vaccinated do not transmit the virus to others.
“I think if you develop some kind of immunity with the vaccine, your ability to get infected will decrease.” Even if you do get infected, the level at which the virus multiplies in the nose, logically, it will decrease, “the scientist told the New York Times.
However, until scientists make sure that the mask will continue to dominate our lives.
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