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Don’t Wait for an Omicron-Targeting Covid Booster

Photographer: Bridget Bennett/Bloomberg

How much better will an omicron-specific Covid-19 booster be? Research that models the protective effect of variant-modified shots found they’ll probably offer a slight advantage over existing immunizations.

Antibodies that neutralize the virus jump about 11-fold after a booster targeting the original “Wuhan” strain of the coronavirus, and are increased a further 1.5-fold when a variant-modified shot is used, researchers at the University of New South Wales’ Kirby Institute found.