Cancelling races for next two weekends. Atlanta and Miami.
“NASCAR has decided to postpone the race events at Atlanta Motor Speedway this weekend and Homestead-Miami Speedway next weekend. We believe this decision is in the best interest of the safety and well-being of our fans, competitors, officials and everyone associated with our sport. We will continue to monitor this dynamic situation as we assess future race events.”
https://m.nascar.com/news-media/2020/03/13/nascar-statement-on-atlanta-miami-race-events/