This time last year I was fighting a very bad mite infestation on my first year package hive, 120-140 for a 24-hr-drop count. Saw lots of DWV, even dead pupa in front of the hive. Did powdered sugar shakes and eventually had to go to Apiguard. Hive was OK after the Apiguard treatment and made it through the winter fine.
This year I have 3 hives and I haven't seen one DWV case so far. I usually take pictures during my inspections and study them later. I have seen an occasional mite clinging to a bee body, but very, very few, and no DWV on bees crawling on frames in the hive or outside the hive. I haven't even bothered to do a mite count.