COVID-19 official counts can miss mild cases - here's how serosurveys that analyze blood for signs of past i.. - ETHealthWorld

5:15am PDT - May 9th, 2022    health - The Times of India

That's a pretty big jump from the official case count that hovered around a quarter of Americans having been diagnosed with COVID-19. A report from the US Centers for Disease Control and Prevention based these higher proportions on what's called a serosurvey:…