http://www.planetark.com/dailynewsstory.cfm/newsid/43163/story.htm

Now it seems to have crossed the Atlantic and is present in Canada and Argentina, he said. The Spanish researchers have not tested samples from the United States, where bees have also gone missing.

Treatment for nosema ceranae is effective and cheap -- 1 euro (US$1.4) a hive twice a year -- but beekeepers first have to be convinced the parasite is the problem.