Global Health answers the most prominent question: Does the vaccine prevent the transmission of Corona?

The World Health Organization explained that vaccines reduce the likelihood of transmitting the virus to another person, noting that these interesting results have already begun to appear early.

And she continued, saying that these results relate to one or two studies only, that is, they do not include all vaccines that were approved at a later time, which explains why the organization continues to emphasize, despite the vaccinations, to be keen to continue wearing protective masks and adhere to preventive measures.

The head of the organization’s immunology department, Dr. Catherine O'Brien, confirmed in an interview with the magazine "Science in Five" published on the organization's website that the majority of vaccination results so far indicate that they are really effective against Covid-19, and that they provide effective protection against infection with severe cases from it in a way Special.

She also added that the early evidence obtained by the Immunology Department of the World Organization indicates that vaccines are preventive against the emergence of symptoms, in addition to that there is evidence indicating that they prevent infection in the upper respiratory tract, indicating that vaccination with the vaccine also reduces the duration of infection Even if the person does happen to become infected.

While the UN official explained that early data of the results of vaccination campaigns around the world revealed that there is a presence of the virus for people who received the vaccine, it is less in the respiratory system when infection occurs, compared to those who were not vaccinated.

And about whether vaccines provide protection against mutated strains of the emerging virus and its future variants, O'Brien said that what is known about vaccines widely used around the world is that they are still effective for most variants, and may not be as effective as they are against the virus. The original but still had great potency.

Also, according to O'Brien, it is expected that more variants and mutations of the virus will continue to appear, explaining also that vaccine manufacturers are already working to adapt them to try to make them as best as possible against a set of variables in light of what is obtained from new information about how these variables interact with vaccines.

The head of the Immunology Department at the World Health Organization said that all these reasons make it important to continue wearing protective masks even after getting the vaccine. Scientists do not have definitive evidence about the degree to which all vaccines can be obtained to prevent infection or about all mutated strains. Or even variables that will appear in the future.

As for what was raised about a person with Covid-19 disease getting only one dose, O'Brien replied, saying, "The World Health Organization continues to recommend that if a person has Covid-19 disease, he should get a full course of vaccines available and available to him, and therefore if he The available vaccine consists of two doses, so the person must then get the two doses. "

But the official went on to say that early evidence has already been followed up that a single dose of the vaccine, especially among people who have previously had Covid-19 disease, gives a really strong response to antibodies and strengthens the immunity that developed as a result of the disease they contracted.

According to O'Brien, the reason why the World Health Organization recommends the need to go ahead and get the full course of the two-dose vaccine is that, to begin with, there is no evidence yet about whether a single dose after a previous COVID-19 disease can be preventive. Completely or equally from the existing variables.

She also added that the second reason is that it is still not known exactly how long the protection provides by one dose, so getting the two doses can really give the optimum protection against the virus and its mutated strains.