Were bivalent boosters worth it?

In early September, the Centers for Disease Control and Prevention (CDC) recommended updated Covid-19 boosters for all Americans 12 and over.

The “update” was a broadening of the vaccines’ target: In addition to aiming for the initial strain of the virus, the new boosters would also take aim at the spike protein present on newer omicron variants of SARS-CoV-2, BA.4 and BA.5.

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Featured image, by Braňo via Unplash, under the Unsplash License.