Man from New York being vaccinated. (Image courtesy: Twitter)

People who are severely allergic to any ingredient of COVID-19 vaccine ''Covishield'' are advised not to take it, Serum Institute of India said.

According to the fact sheet for the vaccine recipient by the Serum Institute of India, one should not get the Covishield vaccine if the person had a severe allergic reaction after a previous dose of this vaccine.

The ingredients of Covishield vaccine are "L-Histidine, L-Histidine hydrochloride monohydrate, Magnesium chloride hexahydrate, Polysorbate 80, Ethanol, Sucrose, Sodium chloride, Disodium edetate dihydrate (EDTA), Water for injection," Serum Institute said.

The fact sheet for the vaccine recipient on the website of the vaccine major is to help the recipient understand the risks and benefits of the Covishield vaccine.

The vaccine maker also said that the vaccine recipient should also tell the healthcare provider about all the medical conditions before getting the Covishield vaccine including, "if you have ever had a severe allergic reaction (anaphylaxis) after any drug, food, any vaccine or any ingredients of Covishield vaccine".

COVID-19 Vaccine

Frequently Asked Questions

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.

Show

Covishield not to be taken by people severely allergic to any of its ingredients: Serum Institute

According to the fact sheet for the vaccine recipient by the Serum Institute of India, one should not get the Covishield vaccine if the person had a severe allergic reaction after a previous dose of this vaccine.

Man from New York being vaccinated. (Image courtesy: Twitter)

Related stories