Pfizer-BioNTech announced early results of how well its vaccine works against the omicron variant. Does the Pfizer vaccine work against omicron?
A booster dose of the Pfizer-BioNTech Covid-19 vaccine appears to provide strong protection against the omicron variant, the companies announced Wednesday.
Blood samples from those who received only the primary series of the vaccine, on average, did see a 25-fold drop in antibodies against the new variant. That may indicate that two doses of the vaccine may not be sufficient to protect against infection with omicron, although they may still prevent severe disease, the companies said.
As the highly mutated omicron variant, first identified in South Africa, spreads around the globe, scientists are racing to determine how the available vaccines will work against it.
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