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More Than Half of Americans Show Signs of Prior Covid Infection

  • At end of omicron, 57.7% of U.S. had antibodies from past case
  • About 75% of U.S. teens, adolescents have been infected
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What's the Outlook for Covid-19?

Well over half the U.S. population has been infected with the coronavirus at some point, according to a nationwide study of blood samples, the latest evidence of Covid-19’s far-reaching impact.

As of February, 57.7% of Americans had antibodies to SARS-CoV-2 in their blood, health officials said, up from 33.5% in December, when the omicron wave began sweeping across the country. While the antibodies aren’t necessarily protective, they indicate a previous infection.