WHO Recommends Mixing And Matching COVID Vaccines For Better Immunity

WHO Recommends Mixing And Matching COVID Vaccines For Better Immunity

AstraZeneca and any of the mRNA vaccines may also be used after the first dose of Sinopharm’s inactivated vaccine, according to the WHO.


WHO Recommends Mixing And Matching COVID Vaccines For Better Immunity

The World Health Organisation released interim recommendations on mixing and matching COVID-19 vaccines manufactured by different suppliers for both the second and booster doses on Thursday.

According to the global health organisation, mRNA vaccines such as those produced by Pfizer Inc (PFE.N) and Moderna Inc (MRNA.O) may be used as follow-up doses after the first doses of AstraZeneca’s (AZN.L) vectored vaccine or vice versa.

AstraZeneca and any of the mRNA vaccines may also be used after the first dose of Sinopharm’s inactivated vaccine, according to the WHO.

Source - The Atlantic

Viral vector vaccines contain instructions for generating coronavirus antigens, while mRNA vaccines induce an immune response in recipients using coding from SARS-CoV-2, the coronavirus that causes COVID-19. Inactivated vaccinations use chemicals, heat, or radiation to inactivate or destroy the SARS-CoV-2 virus.

The guideline was developed in response to suggestions made earlier this month by the WHO’s Strategic Advisory Group of Experts on vaccines.

The recommendation follows extensive research published last week, which found that the first dose of AstraZeneca or Pfizer/BioNTech dose followed by a Moderna vaccine nine weeks later resulted in a more positive immune response.

However, WHO said that mixing and matching should take supply projections, accessibility, and the benefits and dangers associated with the COVID-19 vaccinations into consideration.

WHO stated that the interim suggestions would be re-evaluated when new evidence becomes available.

Numerous countries have already begun mixing and matching vaccines in response to rising COVID-19 infection rates, scarcity of supply, and delayed vaccination rates due to safety concerns.

Source – Reuters

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