Bivalent COVID-19 booster vaccine shown to be highly effective in reducing deaths and hospitalizations

Since September, 2022, bivalent mRNA vaccines—which contain elements from both the original wild type COVID strain and an updated component from the omicron strain—have replaced older style monovalent boosters in the U.S., Israel, and other countries. These vaccines were designed to help improve vaccine-induced immunity against the omicron variant and subsequent subvariants.

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