HomeNewsIndiaPfizer, Moderna, Johnson and Johnson vaccines effective against B1617 variant of COVID-19

Pfizer, Moderna, Johnson and Johnson vaccines effective against B1617 variant of COVID-19

World Health Organization classified the B1617 SARS-CoV-2 variant, which was first detected in India, as a variant of concern.

May 13, 2021 / 09:30 IST
Story continues below Advertisement
Pfizer’s vaccine is based on genetic material or mRNA.
Pfizer’s vaccine is based on genetic material or mRNA.

COVID-19 vaccines approved by the United States like Pfizer, Moderna and Johnson and Johnson have effectiveness against the B1617 variant of the virus that is predominant in India, which is experiencing one of the worst outbreaks of the pandemic, a top American health official said.

The observation is based on the latest data about the variant and the three major vaccines approved by the United States, said Dr Francis Collins, Director of National Institute of Science.

Story continues below Advertisement

“The data is coming in, and it looks very encouraging that the U.S. -approved vaccines, the Pfizer, the Moderna, the J&J, do have effectiveness against this variant called B1617,” Collins told the media.

“It's a little less effective in that case than some of the others, but it looks like it ought to be good enough to make Americans protected. And that's really a good thing to hear,” he said in response to a question.

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