HomeNewsWorldCOVID-19 shots may be required on an annual basis in the future: USFDA

COVID-19 shots may be required on an annual basis in the future: USFDA

They also opined that the virus will likely circulate globally, with other prevalent respiratory viruses like influenza. It was also stated by them that this scenario almost certainly necessitates the same level of annual consideration for vaccine composition revisions.

May 05, 2022 / 09:52 IST
Story continues below Advertisement

According to top US Food and Drug Administration (USFDA) experts, the US may need to update its Covid-19 vaccines every year, and "a new normal" may involve an annual vaccine alongside a seasonal flu shot.

The experts said that SARS-CoV-2, the virus that produces COVID-19, is the new normal, and it's time to recognise this. They further said the availability of efficient medicines, together with widespread vaccine and infection-induced immunity, could help mitigate the impact of future outbreaks.

Story continues below Advertisement

They also opined that the virus will likely circulate globally, with other prevalent respiratory viruses like influenza. It was also stated by them that this scenario almost certainly necessitates the same level of annual consideration for vaccine composition revisions.

"A recent meeting of the VRBPAC on April 6, 2022, resulted in a lively discussion and agreement on many considerations for planning for upcoming approaches to COVID-19 vaccine strain composition decision-making, development, and recommendations," Dr Peter Marks, director of the FDA's Center for Biologics Evaluation and Research; Principal Deputy Commissioner Dr Janet Woodcock; and new FDA Commissioner Dr Robert Califf, wrote in a paper published in the medical journal JAMA on May 2.

COVID-19 Vaccine
Frequently Asked Questions

View more

How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

How many types of vaccines are there?

There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

What does it take to develop a vaccine of this kind?

Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
View more
+ Show