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Pfizer envisions a COVID-19 booster shot 12 months after getting vaccinated

Pfizer envisions a COVID-19 booster shot 12 months after getting vaccinated”

Speaking to four European newspapers on Thursday evening, Bourla said COVID-19 will "become like flu". It comes at a time when Americans are questioning the longevity both the Moderna and Pfizer vaccines offer patients with immunity against the virus.

In the case of the flu vaccine, it has to be taken every year for two reasons: the first is that the body's immune response can decrease over time, and the second is that the influenza virus is constantly adapting and changing, with new variants emerging.

So far, experts say that the vaccines continue to provide good protection against all forms of SARS-CoV-2. But the immune response against some of the variants, specifically against one called B.1.351 that was first identified in South Africa, may be slightly lower than immune responses against the original strain that the vaccines were created to fight. An additional dose, scientists believe, may boost that response back up to where it should be.

The other open question about vaccines is how long the immunity they confer actually lasts.

The CEO of Pfizer, Albert Bourla, said there is a "likely scenario" where people who have had two Pfizer COVID-19 vaccine doses will need a third jab soon into the future. Some early studies suggest that they are.

More news: `Pakistan helped the Taliban, played on both sides in Afghanistan`: US senator

"It is likely that the countries that have already achieved high vaccine coverage are going to be ready to shift their focus to boosters in 2022 and possibly even starting at the end of this year", Corinne M. Le Goff, PharmD, Moderna's chief commercial officer, said during a call with investors, Business Insider reported.

Of 77 million people vaccinated in the United States, there have been 5,800 such breakthrough infections, Walensky said, including 396 people who required hospitalisation and 74 who died.

The Pfizer-BioNTech vaccine, which was granted an emergency use authorization by the U.S.

To date, Canada has administered 9,329,231 COVID-19 vaccines. So in March, scientists began testing a dose of this vaccine as a third dose given after two doses of the original shot. Researchers were stunningly quick to develop not one but several working vaccines, which is great news - but few vaccines last forever. Research has shown that people who get vaccinated have more antibodies than those who were naturally infected.

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