Reinfection is only unimportant if you don't have a large number of people who are going act to reinfect. If you do have a large number of infections, then of c

Reinfection is only unimportant if you don't have a large number of people who are going act to reinfect. If you do have a large number of infections, then of course refection is going to matter. And we do have a large number of cases in the most affected counties. Basically, just like you don't want to overwhelm hospitals, you don't want to overwhelm your contact tracing infrastructure