Kudos to NYT, but I think the COVID Tracking Project data is probably better because it attempts to measures total testing as well (positives and negatives). I've been using it to report state-level testing statistics and new case/death curves:

https://www.deptofnumbers.com/covid19/

From the data I've learned that Washington state appears to be getting their arms around this thing:

https://www.deptofnumbers.com/covid19/washington/