>
> >From what I have read, nosema will come back with a vengeance once
> treatment is stopped...  the same for EFB, when you stop the treatment of
> the antibiotic, it returns.   The (3rd edition of Honey Bee Diseases &
> Pests), the thought is the antibiotic enables bees which are infected with
> EFB to live (instead of die) and once the control stops......
>

I'd be careful about such extrapolations.  In only one study that I know of
(by Lee Solter, with whom I've discussed at length) has there been
suggested evidence of this, as opposed to numerous studies to the contrary.

Ditto with OTC, if used if indicated by presence of actual EFB (as opposed
to prophylactic annual use).   I myself have been dealing with what appears
to be the "new and virulent" strain of EFB for a few years, and am very
pleased with appropriate use of OTC, which I have seldom used over the past
couple of decades.

-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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