The arrival of the coronavirus vaccines at the end of last year 2020 has provided a respite for a large part of the population, which looks closer to the end of this pandemic. In Spain, they have already been administered about three million doses, while 1,171,026 people have received the full regimen with both injections.
However, the availability of various vaccines and the immunization of a part of the population will not immediately lead to the elimination of protection measures and restrictions. The safety distance and the use of a mask will still be in force, as it is still there is no evidence that a vaccinated person could be contagiousr if you get the disease.
As the BBC reports, the nine vaccines that exist have already demonstrated a great ability to prevent infection of coronavirus. This means that it is effective in preventing an immunized person from developing symptoms or have a severe picture of the disease. However, it does not mean that it prevents transmission to another person.
Two kinds of immunity
Every vaccine is capable of generating two types of immunity different: the effective and sterilizing. Regarding the first, prevents the virus from causing serious illness, but not so that it enters the organism. It is precisely the latter that the second achieves: prevents contagion and prevents asymptomatic cases. However, it is something that is rarely achieved.
So what kind of immunity will these SARS-CoV-2 coronavirus vaccines? It is something that the experts are not clear yet. “In a nutshell, we don’t know because they are too new“laments Keith Neal, Professor Emeritus of Epidemiology at Nottingham University.
Studies in development
In recent months, with the approval of the different vaccines, several studies have emerged that try to measure the ability to block the infection, although the results will take months to arrive. By contrast, others already have results in review and estimate that vaccines Oxford / AstraZeneca, Moderna and Pfizer / BioNTech they could slow down the transmission.
From the department in charge of COVID-19 in the Harvard University they do not venture to confirm either whether or not it is possible to infect another person after being vaccinated. However, they assure that a person who has received all of the doses can harbor the virus in the nose or throat while multiplying, despite being protected against disease.
Lower viral load
What the vaccine is capable of obtaining is that the immune response generated by our body decreases viral load to the point of reducing the possibility of infecting other people. However, “more research is still needed to be sure.”
Finally, it must be borne in mind that to this day no vaccine has been shown to be 100% effective. In case of reaching 95%, it means that one in twenty people may not be protected against the coronavirus, recalls Johns Hopkins University. Therefore, according to the experts, it is recommended to follow maintaining measures to prevent contagion. In this way, we will take care of ourselves and those around us.