F.D. Flam, Columnist

The Case for Covid-19 Boosters Is as Shaky as Ever

Unanswered scientific questions leave it unclear whether Biden’s extra shots will make Americans safer, especially if the virus runs rampant where vaccination rates are low.

More isn’t necessarily better.

Photographer: Allison Dinner/Bloomberg
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Scientists are raising serious questions about the wisdom of the push for Covid-19 boosters unveiled on Wednesday by President Joe Biden. It’ll be hard to judge whether extra shots for the vaccinated will be helpful or counterproductive until more of the data behind the decision become available.

The officials announcing the decision to give shots to those vaccinated eight months earlier said it was justified by data on an increase in mild infections and speculation that this might evolve into something worse.