This article gives that number: https://www.sciencemag.org/news/2020/02/united-states-badly-bungled-coronavirus-testing-things-may-soon-improve https://www.sci

This article gives that number: https://www.sciencemag.org/news/2020/02/united-states-badly-bungled-coronavirus-testing-things-may-soon-improve https://www.sciencemag.org/news/2020/02/united-states-badly-...