Deformed Wing Virus (DWV), one of 18 known viruses of the honey bee, Apis mellifera, was first isolated from dead bees from Egypt. DWV, thought to be present wherever honey bees are found, is usually an inapparent infection with low viral titers. Bees with the highest titers of DWV have deformed wings and die within 48 hours of emergence. We, and others, have reported vertical and horizontal transmission of DWV. Queens may initially be infection free, laying virus free eggs, only to later contract a DWV infection. She will then lay eggs with virus. Our current work is evaluating the sublethal and behavioral effects of DWV.