Real-world data show updated Covid-19 boosters increase protection against infection

The updated Covid-19 boosters increase people’s protection against symptomatic infection from the coronavirus, according to some of the first estimates of how the shot is performing in the real world and in people, not just in lab experiments. What’s more, that protection was even stronger when people waited a longer period of time since their last dose of the original shot.

The findings, released Tuesday by the Centers for Disease Control and Prevention, do not, however, address the question of whether the bivalent shot offers greater protection than another shot of the original formulation would have.

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