virus covid-19 infection

16.8M COVID-19 cases went undiagnosed last summer, NIH study finds

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The National Institutes of Health released its findings Tuesday, which said that for every diagnosed COVID-19 case, there are 4.8 undiagnosed cases — estimating 16.8 million undiagnosed cases occurred by July of 2020 alone.

Scientists tested more than 8,000 people who hadn’t been previously diagnosed with COVID-19. Each participant gave a blood sample between May 10 and July 31, 2020.

Scientists looked to find any antibodies that developed from a COVID-19 infection. RELATED: COVID-19’s global death toll this year has already surpassed 2020’s countResearchers found that more than 300 participants had COVID-19 antibodies, signaling they once had the virus.

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