Actually not so prevalent as the media would have you believe. The beekeepers in my state of Vermont have never seen a case of CCD. I would say the same for the remaining 5 states of New England. One possible case in Connecticut at the beginning of the reports, but I know him and doubt it was a real case.
Jeff Pettis, just resigned head of our national bee lab, said there hasn't been a documented case of CCD in a few years. Of course some operations would like to say they have lost bees to CCD recently because they get government money to re-stock their dead colonies. Most likely a case of PPB, not CCD.
CCD was, in my opinion, a combination of factors, with varroa at the forefront. Think about this...What do you think would happen if your bees....
Were compromised by varroa...and the viruses they inject into the bee pupae
Had high levels of Nosema
Got placed on trucks and travel thousands of miles to pollination
When on those crops are expected to gather nutrition from mono-crop, poor feed resource deserts
Are exposed to pesticide and fungicide levels such as you've never seen in the UK.
And this CCD thing which supposedly began in 2006, is only the latest in a series of events going back a hundred years or more. Disappearing disease and Fall Dwindling were all unexplained cases of something that could be called Colony Collapse.
In 1995, Jadczak, apiary inspector from the state of Maine, called what he was seeing as Colony Collapse, and wrote Shimanuki at the US Bee Lab. His letter was just published in Bee Culture magazine.