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‘Is it safe to have more than one type of COVID vaccine?’ and other questions answered by an immunologist

by injuryatworkadvice_rdd0e1
December 7, 2020
in Health
‘Is it safe to have more than one type of COVID vaccine?’ and other questions answered by an immunologist

If we’re ever to return to some semblance of normality, then the world’s inhabitants must be resistant to SARS-CoV-2, the virus that causes COVID-19. However with so many alternative vaccines in manufacturing, questions are undoubtedly going to be raised, comparable to can I nonetheless have a vaccine if I’ve been concerned in a trial testing different variations? And, what if I’ve already had COVID – do I nonetheless want a vaccine?

A primary understanding of immunology can reply all these questions. All COVID vaccines attempt to generate an immune response to proteins the virus must enter your cells. Whether or not that is through the use of a innocent virus carrying the protein that mimics SARS-CoV-2 however doesn’t replicate, or through the use of the genetic code for these proteins (a messenger RNA), the result is similar. The protein essential to stopping SARS-CoV-2 is displayed, recognised by the immune system, and the physique produces antibodies and T cells which are then able to cease future an infection.

Is it OK to have a unique second dose?

A booster vaccination enhances the standard of the immune response and sends a reminder concerning the virus. It doesn’t matter if the vaccine used to prime the immune system is totally different from the one used to spice up, so long as they each comprise the essential viral protein.

A booster shot is sort of a reminder to your immune system to be looking out for a selected bug.
BaLL LunLa/Shutterstock

Booster vaccinations are frequent, and the time interval between them varies. For instance, a booster for tetanus is suggested each ten years whereas vaccines for hepatitis A or measles are one-shot wonders – a booster is just not wanted.

Solely by finding out the immune response in individuals who have been vaccinated, will we be capable to inform when and if additional booster vaccinations are wanted. This shall be decided by measuring SARS-CoV-2 particular antibody and T cell responses in a pattern of blood. It’s attainable that sure teams, comparable to older folks, may want a unique booster technique – and this can take time to work out.

What if I’ve already had a trial vaccine?

For those who’ve taken half in a COVID vaccine trial, it might offer you a head begin on the prime/enhance method, and you can attain the required immunity threshold faster. Alternatively, your trial vaccination could have been so efficient that the non-trial model of the vaccine isn’t needed.

It is vital for vaccine builders to comply with up individuals who have had the vaccine to see how their immune system has reacted and whether or not or not the vaccine gave them immunity. This comply with up must be carried out over an extended interval and embody totally different sections of the inhabitants: younger, outdated, totally different ethnic teams, and sufferers on medicine that dampen the immune system (comparable to chemotherapy).

What if I’ve had COVID?

Even if in case you have recovered from COVID-19, you’ll be able to nonetheless profit from vaccination. There’s proof in hospitalised sufferers that the an infection was so overwhelming that the immune response turned exhausted and so immune reminiscence to the virus was not created effectively. Additionally, if you happen to had a really gentle an infection, your immune system could not have reached the purpose of laying down immune reminiscence. So vaccination might be useful, no matter whether or not you skilled extreme or gentle illness.

Although vaccination is a selection, don’t neglect that vaccines have been round a very long time and have saved extra lives than some other medication. The danger of getting COVID and its terrible and sometimes long-term side-effects outweigh any theoretical threat of a vaccine.

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