you are here: HomeNewsWorld

Johnson & Johnson's 1-dose shot cleared, giving US 3rd COVID-19 vaccine

Health experts are anxiously awaiting a one-and-done option to help speed vaccinations, as they race against a virus that already has killed more than 510,000 people in the US and is mutating in increasingly worrisome ways.

February 28, 2021 / 08:02 AM IST
7. Johnson & Johnson | Market Cap: USD  338.6 billion | Industry : Pharmaceutical

7. Johnson & Johnson | Market Cap: USD 338.6 billion | Industry : Pharmaceutical

The US is getting a third vaccine to prevent COVID-19, as the Food and Drug Administration on Saturday cleared a Johnson & Johnson shot that works with just one dose instead of two.

Health experts are anxiously awaiting a one-and-done option to help speed vaccinations, as they race against a virus that already has killed more than 510,000 people in the US and is mutating in increasingly worrisome ways.

Health experts are anxiously awaiting a one-and-done option to help speed vaccinations, as they race against a virus that already has killed more than 510,000 people in the US and is mutating in increasingly worrisome ways.

The FDA said J&J’s vaccine offers strong protection against what matters most: serious illness, hospitalizations and death. One dose was 85% protective against the most severe COVID-19 illness, in a massive study that spanned three continents protection that remained strong even in countries such as South Africa, where the variants of most concern are spreading.

The more vaccines that have high efficacy that we can get into play, the better, Dr. Anthony Fauci, the top US infectious disease expert, said ahead of the FDA’s ruling.

Close

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

The more vaccines that have high efficacy that we can get into play, the better, Dr. Anthony Fauci, the top US infectious disease expert, said ahead of the FDA’s ruling. Shipments of a few million doses to be divided among states could begin as early as Monday. By the end of March, J&J has said it expects to deliver 20 million doses to the US, and 100 million by summer.

J&J also is seeking authorization for emergency use of its vaccine in Europe and from the World Health Organization. Worldwide, the company aims to produce about 1 billion doses globally by the end of the year.

On Thursday, the island nation of Bahrain became the first to clear its use. (AP) J&J also is seeking authorization for emergency use of its vaccine in Europe and from the World Health Organization. Worldwide, the company aims to produce about 1 billion doses globally by the end of the year. On Thursday, the island nation of Bahrain became the first to clear its use.
PTI
first published: Feb 28, 2021 08:01 am

stay updated

Get Daily News on your Browser
Sections