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.