Can COVID-19 vaccines be mixed and combined?

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Can two-dose COVID-19 vaccines be mixed and combined? Credit: AP Illustration / Peter Hamlin

Can two-dose COVID-19 vaccines be mixed and combined?

It’s likely to be safe and effective, but researchers continue to collect data to make sure.

Worldwide authorized COVID-19 shots are designed to stimulate yours to produce antibodies to the fight against viruses, although their way of varying, said Dr. Kate O’Brien, director of the World Health Organization unit.

“File based of how vaccines work, we believe the combination and combination regimens will work, ”he said.

Scientists at Oxford University in the UK are testing combinations of two-dose COVID-19 vaccines manufactured by AstraZeneca, Moderna, Novavax and Pfizer-BioNTech. Minor tests are also being conducted in Spain and Germany.

“We really just need to get evidence of each of these combinations (vaccines),” O’Brien said.

So far, limited data suggest that an AstraZeneca shot followed by the Pfizer shot is safe and effective. The combination also appears to present a slightly higher likelihood of temporary side effects such as aches and chills.

This could be due to the fact that mixing and combining different types of vaccines can often produce a stronger immune response, said Lawrence Young, a virologist at the University of Warwick in the UK.

In some places, I already suggest mixing it up under certain circumstances.

After the AstraZeneca vaccine was linked to extremely rare blood clots, many European countries, including Germany, France and Spain, recommended that people who got it as a first dose be given a Pfizer or Moderna vaccine as a first dose. second dose.

In Britain and Canada, officials say people should get the same vaccine for their second dose, if possible. If they get AstraZeneca as their first vaccine, they are advised to take another vaccine only if they have a history of blood clots or other conditions that could put them at risk for clots.


Can COVID-19 vaccines be combined and combined?


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Citation: Can you combine and combine COVID-19 vaccines? (2021, June 17), retrieved June 17, 2021 at https://medicalxpress.com/news/2021-06-covid-vaccines-2.html

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