Dance/USA is ballet related. In the document linked:
"--Dancers should maintain a distance of at least 6 feet apart, but preferably 10 feet apart if possible, as there is some research showing that the breath from exercise can carry the virus further. Safe distances have not been determined for a dancer in a studio.
--No activities that require direct or indirect contact including: partnering, tactile cueing, direct floor work or touching of the same equipment "
A bit harder to comply with in partnered dancing.