> When the colony is engaged in a heavy honey flow, nest hygiene conceivably takes a back seat.
I can't see why an increased flow would mitigate a VSH trait or any nest hygiene. Nurse bees either have the behavioral trait or not. I agree that large colonies can have larger varroa populations, but that's the whole point of breeding for varroa resistance or tolerance.
Bill Hesbach
Cheshire, CT
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