>Singh R, Levitt AL, Rajotte EG, Holmes EC, Ostiguy N, et al. (2010) RNA Viruses in Hymenopteran Pollinators: Evidence of Inter-Taxa Virus Transmission via Pollen and Potential Impact on Non-Apis Hymenopteran Species.

Makes me think there may be some pollen and honey combs that shouldn't be reused after a dead-out especially from a colony that died after visible DWV.  But the difficulty I'm having is understanding if this study just identifies the natural paths that keep DWV circulating in the bee population or if the results suggest pathogenic infections can occur with these vectors.  Martin's Hawaii study seems to suggest that there's always a reserve of naturally occurring and diverse DWV in a population but that changes when DWV replicate in varroa. 

>The arrival of the parasitic Varroa mite into the Hawaiian honey bee population allowed us to investigate changes in the prevalence, load, and strain diversity of honey bee viruses. The mite increased the prevalence of a single viral species, deformed wing virus (DWV), from ~10 to 100% within honey bee populations, which was accompanied by a millionfold increase in viral titer and a massive reduction in DWV diversity, leading to the predominance of a single DWV strain.

Global Honey Bee Viral Landscape Altered by a Parasitic Mite
Stephen J. Martin,1* Andrea C. Highfield,2 Laura Brettell,1 Ethel M. Villalobos,3 Giles E. Budge,4 Michelle Powell,4 Scott Nikaido,3 Declan C. Schroeder2*

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