Valid point! This is indeed already much higher, and only sets a lower bound. So we should keep an eye on this well controlled sample. So we have a lower bound

Valid point! This is indeed already much higher, and only sets a lower bound. So we should keep an eye on this well controlled sample. So we have a lower bound of somewhere around 1% and an upper bound of somewhere around 7% ( https://www.worldometers.info/coronavirus/ https://www.worldometers.info/coronavirus/ ) at the moment. Not very reassuring.