Tweet from CT_Bergstrom at August 09, 2022 at 09:50AM
When COVID emerged in 2020, one of the serious obstacles to control was that—unlike with the original SARS virus—people tended to be infectious before they showed symptoms. As a result, we couldn’t rely on symptomatic screening to slow the spread of disease.
— Carl T. Bergstrom (@CT_Bergstrom)
Aug 9, 2022