Best that I know, Bob is correct about viruses seen.
 
However, and we are working up articles on this - will show some of our  
results at the upcoming research luncheon of the CA Beekeepers - we see these  
viruses and more.  Biggest difference, there are regional differences in  which 
viruses are commonly seen and virus titers.
 
We also now have evidence that we can see the effects of  different 
management practices on viral loads.  Some of these are not  practical for all types of 
beekeeping or areas, but management can have a  dramatic effect on virus 
diversity and viral titers.
 
We're working as fast as we can - but we're nickel and diming this, so its  
as we get time.  Jerry
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