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 IndiaThat'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:…