Dec 8 (Reuters) - BioNTech and Pfizer (PFE.N) said on Wednesday a three-shot course of their COVID-19 vaccine was able to neutralise the new Omicron variant in a laboratory test and they could deliver an upgraded vaccine in March 2022 if needed.

The German and U.S. companies said two doses of their vaccine resulted in significantly lower neutralising antibodies but a third dose boosted those antibodies by a factor of 25.
https://www.reuters.com/business/healthcare-pharmaceuticals/biontech-pfizer-say-test-shows-3-doses-vaccine-neutralise-omicron-2021-12-08/

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