Pfizer believes a third dose of the COVID-19 vaccine will be needed

Albert Bourla, the CEO of Pfizer, Has hinted at the need for a third dose against coronavirus for vaccinated people. “Probably needed somewhere between 6 and 12 months after the second. And from there, there will be one annual vaccination“But all this will have to be confirmed,” the pharmaceutical director said in a talk for the CVS pharmacy chain recorded in early April, but aired on Thursday. Bourla said the scenario may change depending on the ability of drugs to resist new variants. Scientists fear that new mutations in the coronavirus be resistant to immunizations.

the Pfizer vaccine has an effectiveness of the 92% to prevent the more serious cases of coronavirus infection, according to one of the largest studies carried out to date: that of the research institute of the health mutual Clalit, the largest of the Israeli health system. The company vaccinated half of its 1.2 million members and found the effectiveness of protection among the 600,000 immunized compared to the other unvaccinated half of the control group.

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Pfizer had announced that the immunity had a six-month window after the second dose injection. The third puncture should arrive after this semester. Modern, Which uses a technology similar to that of the vaccine Pfizer-BioNTech, Also has a high effectiveness during the same period, as published The New England Journal of Medicine.

David Kessler, The person in charge of pandemic management for the government of Joe Biden, Also warned Thursday that the Americans must be prepared for the possibility of the third dose. “At the moment we do not know everything (…). We are studying the duration of the response of the antibodies“The pediatrician said during a meeting with lawmakers. At the meeting, the official called on all Americans to continue to be vaccinated.” Nothing should distract them from the fact that they need to be vaccinated and that we have the sufficient doses“, He stated, referring to the suspension of injections of the antidote of Johnson and Johnson for their possible links with cases of thrombi.

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The United States is also monitoring the infections in people who have completed both doses of the vaccine, according to Rochelle Walensky, Director of the Centers for Disease Control and Prevention (CDC). Of the 77 million people immunized in the United States, they have become infected 5,800, of which 396 had to be admitted to a hospital and 74 died, Walensky reported in an appearance before a subcommittee of the House of Representatives.

The CEO of Pfizer has said that vaccination is an important tool in the fight against variants of the VOCID they have proven to be more contagious. The pharmaceutical company has reported in one of its studies that its drug is less potent against the mutation of the virus caused by South Africa, Which already totals more than 300 cases in 25 U.S. states. The pharmaceutical company announced on February 26 that it would study the possibility of injecting one third dose to people vaccinated to try strengthen protection in the face of these variants. Bourla then said that with this dose the antibody response could be enhanced between 10 and 20 times, And stressed that it could become as common as annual immunization against aggravate.