Regeneron says Covid drug could be less effective against Omicron variant

Regeneron Pharmaceuticals said on Tuesday prior analyses suggested its Covid-19 antibody cocktail, and similar drugs, could have reduced activity against the Omicron variant.

The drugmaker said the analyses of the individual mutations present in the Omicron variant indicate “that there may be reduced neutralization activity of both vaccine-induced and monoclonal antibody conveyed immunity.”

Further analyses are ongoing, the company said, adding that there was no direct data testing Omicron’s resistance to immunity gained from vaccines and monoclonal antibodies.

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