Pfizer researcher speaks out on whether Covid versions will affect vaccine effectiveness

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Amid concerns of whether a third dose will be required, Pfizer VP and primary clinical officer Phil Dormitzer informs NBC News’ Miguel Almaguer “we do not yet have proof” that the vaccine needs to be altered. Feb. 18, 2021

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http://allcnaprograms.com/pfizer-researcher-speaks-out-on-whether-covid-versions-will-affect-vaccine-effectiveness/