People who have received the vaccine against Covid-19 of Pfizer O Modern does six months have almost double the risk from get the disease what does less than four months from the second puncture, according to the results of a published investigation The New England Journal of Medicine.
In addition, the study points out the importance of keep using the mask indoors despite having been vaccinated. Despite this, when the ability to prevent contagion begins to decline, the risk of infection with the coronavirus it continues to be three times lower than that of the unvaccinated people.
This new data is added to that of another similar study conducted in Israel which also indicates that the degree of effectiveness of the Pfizer vaccine in preventing infections is reduced four months later receiving the second dose. Now, scientists want to decide whether the vaccine’s decline in efficacy also affects its ability to avoid serious complications by Covid-19.
Debate with the third dose
These disclosures reinforce the idea that a third dose of the vaccine is necessary. In this regard, the director of the US National Institute of Infectious Diseases and Allergies, Anthony Fauci, he spoke again about this possibility: “I would not be surprised that the complete adequate vaccination schedule is probably three doses, due to my experience as an immunologist, he assured at a press conference.
For its part, the European Medicines Agency (EMA) said this past Thursday that with the current information and data “no urgent need to administer booster doses to people vaccinated with the complete regimen in the general population ”.
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