Sequence Recombination and Conservation of Varroa destructor Virus-1 and Deformed Wing Virus in Field Collected Honey Bees (Apis mellifera)
In areas where V. destructor is established, virus recombination occurs and chimeric viruses between DWV and the Varroa destructor virus-1 (VDV1) [8-10] have been reported [10,11].

Both DWV [1,5,6,11-42] and VDV-1 [8-10] belong to the Iflaviridae (genus Iflavirus) [8,43], a picorna-like family of insect viruses. There is also a Kakugo virus (KV, genus Iflavirus) [44-46], which is very closely related to DWV genetically but is associated with aggressive behaviour in guard bees.
http://www.plosone.org/article/info%...l.pone.0074508