HomeNewsWorldModerna eyes COVID booster by August, not clear yet if Omicron-specific needed

Moderna eyes COVID booster by August, not clear yet if Omicron-specific needed

Last month Moderna began clinical trials for a booster dose specifically designed to target Omicron but initial results from studies in monkeys show the Omicron-specific shot may not offer stronger protection than a new dose of the existing vaccine.

February 17, 2022 / 06:32 IST
Story continues below Advertisement
Data suggests reported cases of rare heart inflammation are relatively higher after Moderna's vaccine compared with the Pfizer/BioNTech shots, Canadian health officials said last week.
Data suggests reported cases of rare heart inflammation are relatively higher after Moderna's vaccine compared with the Pfizer/BioNTech shots, Canadian health officials said last week.

An Omicron-specific booster could be ready by August, the CEO of U.S. biotech firm Moderna told Reuters, but the firm is still gathering clinical data to determine whether that vaccine would offer better protection than a new dose of the existing jab.

Last month Moderna began clinical trials for a booster dose specifically designed to target Omicron but initial results from studies in monkeys show the Omicron-specific shot may not offer stronger protection than a new dose of the existing vaccine.

Story continues below Advertisement

Moderna chief executive Stephane Bancel said in an interview the company aimed to have a booster ready by August 2022, before next autumn when he said more vulnerable people may need it.

Moderna's vaccines use mRNA technology to provoke an immune response, similar to the shot developed by Pfizer/BioNTech.

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