Those vaccinated with Pfizer are likely to need a third booster dose within twelve months, according to its CEO.
For the sake of complete immunization, twelve months after being fully vaccinated, it is likely necessary a third booster dose of the Pfizer COVID-19 vaccine.
Due to the still short duration of this vaccine, we still do not know how long its protection lasts and if it will be enough to protect us from the appearance of new strains of SARS-CoV-2 that could reduce the effectiveness of the vaccine.
Protection for at least 6 months
According the studies presented by Pfizer, your vaccine has at least six-month protection and reaches more than one 91% effective against the virus and more than 95% against severe symptoms of the disease.
Pfizer data was based on in more than 12,000 vaccinated participants. However, the researchers say more data is still needed to determine if the protection lasts after six months.
To make sure if we will need a third booster dose, Pfizer is starting a new study targeting people in two age groups (people between 65 and 85 years old and people between 18 and 55 years old) selected from the group that already participated in the first Pfzier / BioNTech trials.
A third dose would not only allow us to guarantee a better response to other variants of the virus, but could also reinforce the antibody response. We must bear in mind that even with the completion of the two-dose vaccination and with such high rates of effectiveness, there is still a percentage of people who can get sick and even die.
Of the 77 million immunized people in the United States, for example, 5,800 have been infected. 396 of them had to be admitted to a hospital and 74 of them died. More than 40% of infections occurred in people 60 years of age or older, 65% were women, and 29% were asymptomatic. Albert Bourla, the CEO of Pfizer, has come to affirm that a third dose could perhaps boost the antibody response 10-20 times.
To cope with all this huge demand for new doses, Bourla has assured that they will dramatically increase the supply of vaccines to EU countries in the coming weeks and are preparing to supply Europe with hundreds of millions more doses of vaccines. in 2022 and 2023. They are also working on new formulas that do not need to be stored at minus 70 degrees..
The virus still will be with us for several years, so it is likely that we will also have to get vaccinated annually, as we already do to protect ourselves against the flu. This scenario is much more optimistic than it seems, because once a significant part of the population is vaccinated, it is possible to go back to living almost as before, that is, how we have lived up to now fighting the flu annually.