It might mean, out of those patients being treated (i.e. already very ill with it), rather than total infected? I was reading somewhere that the doubling in ca

It might mean, out of those patients being treated (i.e. already very ill with it), rather than total infected? I was reading somewhere that the doubling in cases in China was mainly due to increasing capacity for hospitals to diagnose the infection rather than an actual measurement of the spread of the disease.