Dec. 8, 2021, 6:52 a.m.
(NBC News) Pfizer-BioNTech announced early results of how well its vaccine works against the omicron variant. Does the Pfizer vaccine work against omicron?
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Dec. 8, 2021, 6:52 a.m.
(NBC News) Pfizer-BioNTech announced early results of how well its vaccine works against the omicron variant. Does the Pfizer vaccine work against omicron?
Login to grade this article.