Prognosis
Omicron Variant Dents Vaccine Protection in Oxford Study
- Scientists looked at Pfizer, Astra responses to variant
- Researchers saw a 30-fold drop in antibodies compared to delta
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The omicron variant dented the protection afforded by two doses of Pfizer Inc.’s and AstraZeneca Plc’s Covid vaccines as feared, researchers found, increasing the risk of infection.
Blood samples collected from people vaccinated with the two different shots and tested against the new strain showed a substantial drop in neutralizing antibodies, a proxy for protection, particularly compared with the delta variant, researchers from the University of Oxford said Monday in a paper.