Moderna says redesigned Covid booster provides better protection

Moderna said Tuesday that its modified Covid-19 booster shot, designed to target two strains of the coronavirus, generated a strong immune response against multiple variants of concern, including omicron.

The drugmaker's redesigned booster — a so-called bivalent vaccine —combines a beta variant-specific vaccine with the company’s original formula into a single shot. The redesigned booster did not, however, include an omicron-specific target.