In general, the bee colony health has declined since 1980, with the introduction of new pathogens and parasites. Distribution in the United States of varroa and tracheal mites, in particular, important new strains of bees. Meanwhile, the continued demand for hives to supply pollination services to increase. This means that bees are more and most often transported, but also stresses the bees.
Colony Collapse Disorder (CCD) is a phenomenon that will disappear in which a hive or European honey bee colony abruptly. While such disappearances have occurred in the history of beekeeping, the duration of the Colony Collapse Syndrome first applied to a drastic increase in the number of disappearances of colonies of western North America at the end of 2006. In Colony Collapse is important because many plants are pollinated by bees worldwide.
