Nosema can be considered a form of diarrhea for bees. Nosema spores
infect the digestive tract of adult bees causing them to defecate inside
or down the front of the hive, which facilitates the spread of the
Young, healthy queens together with a well-fed hive is less likely to
get nosema. Fumagillin can be used can be used in the fall to treat
hives against this problem.