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AP National Business

Pfizer says COVID booster offers protection against omicron

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Published 5:34 AM

By LAURAN NEERGAARD
AP Medical Writer

Pfizer says a booster dose of its COVID-19 vaccine appears to offer important protection against the new omicron variant. Pfizer and its partner BioNTech tested how well vaccine-produced antibodies could neutralize omicron in lab dishes. They found significant weakening after the standard two doses. But a booster dose increased antibody levels by 25-fold. The companies said two doses still may protect against severe illness, but they are working to develop an omicron-specific vaccine in case it’s needed. They announced the findings Wednesday in a press release. The data is preliminary and hasn’t undergone scientific review.

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