It is possible that the new vaccines will prevent the coronavirus from spreading. However, it is not yet known whether those immunized can transmit it.
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Experts consulted by The New York Times, give Evidence of the possibility that people receiving the doses could have the virus without developing symptoms and quietly pass it on to others.
The news Vaccinations against him Covid-19 Modern Y. Pfizer contain high effectiveness, the first is 94.1% and the second is 95% for the prevention of this disease. However, there is still a lack of knowledge of the solution to prevent the virus from spreading as only the number of people vaccinated became ill in both tests CoronavirusTherefore, it questions the possibility that some became infected without developing symptoms, which could result in the virus being transmitted silently, especially if you don’t wear a mask and keep close contact with other people.
In the event that the vaccinated people can accidentally spread the virus, people who haven’t been vaccinated are at risk, especially if they haven’t Respect healthy distance and the use of a mask.
According to an article by NYTExperts believe that vaccines seem exceptional in preventing the severe version of the disease. However, There is a likelihood that the antibodies generated will not respond adequately to the viruses that develop in the person’s nose and spread to infect others by exhaling or sneezing.
“It’s a race: it depends on whether The virus can replicate faster or when the immune system can control it fasterSaid Marion Pepper, an immunologist at the University of Washington in Seattle.
Taking into account the above, the NYT According to experts, mucosal vaccines like FluMist nasal spray or oral polio vaccine are better than intramuscular injections to ward off respiratory viruses.
“Many people believe that they don’t have to wear a mask after vaccination,” said the article by NYT, mentioned by Michal Tal, an immunologist at Stanford University. “It will be very important for them to know if they have to keep wearing a mask because they could still be contagious, ”added the specialist.
As already mentioned, Vaccines can be an important protection against some serious form of the disease, but their nasal effectiveness is not guaranteed. because the lungs are much more accessible to circulating antibodies via the nose and throat.
University of Arizona immunologist Deepta Bhttacharya explains it this way: “Preventing major diseases is easier, preventing mild diseases is more difficult, and preventing all infections is the most difficult.”
This specialist felt Encouraged by a recent study that shows people were given a flu vaccine intramuscularly and had nasal antibodies in abundance. An examination of coronavirus patients found that antibody levels in saliva and blood were largely the same. This signals a strong immune response in the blood that would protect the mucosal tissue.
However, this newspaper points out that studies show that people receiving the vaccine may have high levels of coronavirus in their nose, which is why it is appropriate Using a mask for protection from those who did not receive it Immunization.