These guys should read each others papers. Marina Meixner, et al., reported on Nosema 
cernanae in Germany a year ago, concluding that it did not wipe out hives:

OIE-Symposium DIAGNOSIS and CONTROL of BEE DISEASES, August 26 and 28, 2008

> In conclusion, an infection with Nosema ceranae affected colony strength, but did not 
result in winter fatalities. With regard to overwintering success of honey bee colonies, N. 
ceranae thus appears to be a *low-risk pathogen*.

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