This is a quote from the article "Moderna seeks vaccine approval" in today's Eagle, about COVID shots for kids under 5. "Already about three-quarters of children of all ages show signs they've been infected at some point during the pandemic." No source/reference is given, of course, but is Lauran Neergaard of AP saying 75% of all U.S. children have had COVID? Am I misunderstanding this quote, or if not, can anyone explain the source of this information?

Its from the CDC.

https://www.cdc.gov/mmwr/volumes/71/wr/mm7117e3.htm?s_cid=mm7117e3_w

Quote:

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During SeptemberDecember 2021, overall seroprevalence increased by 0.91.9 percentage points per 4 -week period. During December 2021-February 2022, overall U.S. seroprevalence increased from 33.5% (95% CI = 33.134.0) to 57.7% (95% CI = 57.158.3). Over the same period, seroprevalence increased from 44.2% (95% CI = 42.845.8) to 75.2% (95% CI = 73.676.8) among children aged 0-11 years and from 45.6% (95% CI = 44.446.9) to 74.2% (95% CI = 72.875.5) among persons aged 12-17 years (Figure). Seroprevalence increased from 36.5% (95% CI = 35.737.4) to 63.7% (95% CI = 62.564.8) among adults aged 18-49 years, 28.8% (95% CI = 27.929.8) to 49.8% (95% CI = 48.551.3) among those aged 50-64 years, and from 19.1% (95% CI = 18.419.8) to 33.2% (95% CI = 32.234.3) among those aged 65 years.

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Thanks Perpetual