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Roughly two in every three children aged between one and four years old in the United States have been infected with SARS-CoV-2, according to a nationwide analysis[SUP]
1[/SUP]. Infections in that age group increased more than in any other during the Omicron wave, which researchers say demonstrates the variant’s high transmissibility.
Researchers looked for COVID-19 antibodies in blood samples from more than 86,000 children under 18 years old — including some 6,100 children aged between one and four. In the youngest children, the number of infections more than doubled, from 33% to 68% between December 2021 and February 2022.
Although the analysis involved a small number of very young children, the results are consistent with the rapid rise in documented infections in that age-group, says Pamela Davis, a physician and medical researcher at Case Western Reserve University in Cleveland, Ohio.
