If you're swamped with cases, only the dominant route of transmission matters. When you're going for zero cases, then all routes of transmission matter. US pol

If you're swamped with cases, only the dominant route of transmission matters. When you're going for zero cases, then all routes of transmission matter. US policy is to tolerate a high level of transmission in the community, so CDC's advice will be very different from advice given by public health authorities in counties that don't tolerate transmission.