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Will we have to alter vaccines whenever a COVID-19 variant occurs?

DW, 09 Dec 2021
Drugmakers BioNTech and Pfizer say a three-shot course of their coronavirus vaccine is effective against the newly discovered Omicron variant.
BioNTech has also annouced they could have a new Omicron-specific vaccine by March 2022. Earlier, the World Health Organization said there is no reason to expect that the existing vaccines against the coronavirus will fail against the Omicron variant.

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