Regeneron Antibody Cocktail Found 100% Effective in Preventing Covid

Pharmaceuticals said on Tuesday its antibody cocktail was effective in preventing Covid-19 in people exposed to those infected with the new coronavirus, based on interim results from a late-stage study.

The two-antibody cocktail, REGEN-COV, caused a 100 percent reduction in symptomatic infection and roughly 50 percent lower overall rates of infection, based on an analysis of about 400 participants in the trial who had a household member with Covid-19.

Regeneron said it would discuss the interim results with U.S. health regulators to potentially expand the antibody cocktail’s current emergency use authorization (EUA). Full data from the trial is expected early in the second quarter.

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