Deformed Wing Virus (DWV)

General information

Deformed wing virus (DWV) is an RNA virus from the genus Iflavirus, which causes wing deformities in adult honey bees. All developmental stages can be affected. If already the larva is infected, it will develop crippled wings, a bloated abdomen and discolouration during metamorphosis, and the animal dies shortly after emerging. The virus causes a latent infection that persists. Thus, bees without any symptoms can still be carriers. The Varroa destructor mite is among the vectors of this virus and its move to other colonies poses a major problem in the spreading of the disease. There is no causal therapy.