another look:

In this study, we demonstrated the presence of AKI and DWV in five queen tissues: head, thorax, ovary, gut and spermatheca, as well as in accompanying workers. AKI and DWV were chosen due to their impact on colony health and widespread prevalence. BQCV, a virus commonly associated with queens, was not studied 

For DWV, 361/340 tissues (84 %) showed presence of viral infection (DWV copies ranging from 10 2 to 10 12), with 50 tissues showing viral titres >10 7 copies. 

DWV copies in the 86 queens tested ranged from 0 to 2 x 10 12 copies compared with 3 x 10 7 copies (Fievet et al., 2006) and 10 8 to 10 12 copies (Gauthier et al., 2011) in previous studies. 

In summary, our results suggest covert viral infection in queens from most healthy colonies … mating can transmit viral disease; however, mated queens are older than virgin queens, which results in a higher probability of infection from workers. 

Patterns of viral infection in honey bee queens
Journal of General Virology (2013), 94, 668–676

[sorry about the formatting. 10 2 copies is ten to the second power, one hundred. 10 12 is ten to the twelfth power, or one trillion copies. The second number is supposed to be in superscript, but the email program dumbed it down]

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html