HomeNewsIndiaStopped manufacturing, supply of Covishield vaccine since December 2021: Serum Institute
Trending Topics

Stopped manufacturing, supply of Covishield vaccine since December 2021: Serum Institute

The Indian drugmaker said it is committed to transparency and safety and had taken all the required steps to disclose the rare side effects of the vaccine

May 08, 2024 / 18:47 IST
Story continues below Advertisement
AstraZeneca had partnered with Serum Institute for the supply of Covid-19 vaccines to the Indian government.
AstraZeneca had partnered with Serum Institute for the supply of Covid-19 vaccines to the Indian government.

Serum Institute of India (SII), which produced AstraZeneca's Covid vaccine under the brand name Covishield, on May 8 said it has stopped the manufacturing and supply of additional doses of the vaccine since December 2021.

Following the withdrawal of the Covid vaccine by AstraZeneca, SII said it acknowledges and fully understands the ongoing concerns around UK pharma major’s vaccine.

Story continues below Advertisement

Also read: AstraZeneca announces global withdrawal of Covid-19 vaccine amid demand crunch

An SII spokesperson said it is committed to transparency and safety and had taken all the required steps to disclose the rare side effects of the vaccine.

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