Not high - no, Silvbee - but some continued to drop Varroa for a while after the mid-winter treatment with Oxybee. Like you, I've given them an autumn treatment with ApiVar, and then a December treatment with Oxybee. In one apiary, one colony was still dropping Varroa (about 15 Varroa every two weeks), so I've just now given all three colonies in that apiary another treatment with ApiVar. The strips should be out by the time supers are added.
Kitta