They have tested 39 people:
I wouldn’t draw too many conclusions from that small a sample size.
Lookner comment:
It’s becoming impossible to tell how many people have been tested in the US because (as I understand it) private labs are not required to tell states about negative tests. Is there really no way this country can make these numbers available?
(Screenshot from TN DoH website)
https://twitter.com/lookner/status/1239267760615690241