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Most people infected with COVID-19 Omicron variant didn’t know it, study says

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People give sample for coronavirus test as a precaution against the coronavirus (Covid-19) on July 31, 2022 (Photo by David Mareuil/Anadolu Agency via Getty Images) More than half of people who were likely infected with the COVID-19 Omicron variant last fall didn’t know they had the virus, which could be why it spread so fast, a new study finds.The study, done by researchers at Cedars-Sinai hospital in California, is in line with other research showing that at least 25% — and up to 80% — of people infected with COVID-19 don’t show symptoms."Our study findings add to evidence that undiagnosed infections can increase transmission of the virus," Sandy Y.

Joung, an investigator at Cedars-Sinai and an author of the study, said in a news release. "A low level of infection awareness has likely contributed to the fast spread of Omicron."Researchers were able to examine blood samples from 2,479 health care workers and patients in the fall of 2021, just before the Omicron wave began.

Of those, 210 were likely infected with Omicron based on their antibody levels.RELATED: New ‘Centaurus’ coronavirus variant surfacing in multiple countriesThrough surveys and interviews, researchers found that 44% of the 210 people knew they were infected.

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