-          But if you find the nail, fumagillin is not a good hammer to hit
it with

-          There probably are other nails in the structure that need
attention

IMHO - and Dr. Vidal-Naquet (Honeybee Veterinary Medicine), Nosema is a
copathogen and similar to SHB there are other stressors at play if a colony
is showing decline. - Black Queen Virus seems to have an association with
Nosema, probably old soiled frames and hive bodies. 

 

So testing is quite helpful as a contribution to the rest of the story in a
sick hive.  And of course, a negative test is also good information.

 

A feature about Nosema test is that is very easy and yet very few beekeepers
perform it.

 

DC


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