I would have though that this statement was axiomatic:
consider the spread of varroa throughout the world and how the incidence
would be found to have jumped continents and jumped over countries.

or even within countries: I first found varroa in my colonies when the
nearest reported incidence was over 50 miles away! If you allowed for
natural transmission the rate of spread would be no more than 6 miles per
year.

Ruary

-----Original Message-----

Bob Fanning wrote:

“I can only conclude that the free movement of honeybee colonies does
expedite the
spread of honeybee problems.”
To which Steve Noble replied
     "Assuming your conclusion is correct, and I have no reason to doubt it,
Steve Noble"

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