While the “CDC recommends shorter COVID isolation, quarantine time” (Web, Dec. 27), a study in the medical journal “JAMA Network Open” recently reported that 40.50% of populations infected with SARS-CoV-2 are asymptomatic. Thus reducing the isolation period from 10 to five days may keep society ‘functioning’, but at the risk of asymptomatic spread.

Considering the rampant spread of the omicron variant, does this mean that the Centers for Disease Control and Prevention accept a proliferation of low-grade omicron infection as a means of developing herd immunity?

WILLIAM T. FIDURSKI

Clark, N.J.

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