According to this report from ARS Newslink, scientists may finally have found out what is behind the massive honeybee kills in the US...or maybe they've just found another bee virus. Colony Collapse Disorder (CCD) has been linked, mostly unsuccessfully, to everything from cell phone towers to pesticide. Now genetic testing has revealed a correlation between CCD and honeybees infected with Israeli acute paralysis virus (IAPV), which can be spread by yet another honeybee pathogen, the Varroa mite. BBC News is reporting that there is evidence that the virus entered the US via honeybees imported from Australia.
The authors of the study are quick and right to point out that this is just a correlation, and does not implicate IAPV as the cause of CCD - further testing is going to be necessary to solve this complex mystery. If you want to read the full article, "A Metagenomic Survey of Microbes in Honey Bee Colony Collapse Disorder," published in v. 317 of the journal Science...well...you're unfortunately going to need a subscription to the journal. For free, you can read this supplemental material (pdf).