> VSH is easy to spot by the presence of uncapped purple-eyed
> healthy-looking
> pupae, or uncapped, chewed out healthy looking pupae (not
> like chalkbrood,
> or any other disease--pupae look fresh and white).

This may not necessarily be suggestive only to VHS.
I don’t discuss personal business much, but I will reveal that it was proven to me by our State Apiarist Dennis van Engelsdorp during a detailed inspection of my colonies.   Using a simple technique, he clearly demonstrated that it was waxworm infestation of brood causing the symptom sometimes associated with hygienic behavior.  Strangely enough, colonies that tested above 90% hygienic occasionally had one or two waxworm in brood during the spring inspections. 

Joe
http://pets.groups.yahoo.com/group/HistoricalHoneybeeArticles    



      

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