Sac Brood

Sac Brood is a viral disease. Adult nurse bees clean infected brood cells and, in turn, contract the virus.

Symptoms/Identification

Dead brood positioned upright in cells, their bodies a dark white, grey, or brownish-black color with the uppermost portion(head) darker than the rest of the body.

How it Spreads

Infected equipment

Moving infected combs to uninfected hives

Drifting/Robbing