Here's more info for you from nbu
Viruses can attack at different developing stages and castes of honey bees, including eggs, larvae, pupae, adult worker bees, adult drones, and queens. Although bee viruses usually persist as inapparent infections and cause no overt signs of disease, they can dramatically affect honey bee health and shorten the lives of infected bees under certain conditions. For example significant infestations of colonies with the Varroa mite (Varroa destructor) and its association with Deformed wing virus (DWV) can seriously harm the health and productivity of honey bees. Of the 18 or so viruses identified as infecting honey bees, six viruses, namely, Deformed wing virus (DWV), Black queen cell virus (BQCV), Sacbrood virus (SBV), Kashmir bee virus (KBV), Acute bee paralysis virus (ABPV), and Chronic bee paralysis virus (CBPV) are the most commonly recorded around the world (not necessarily the UK). Note that for the UK, KBV incidence is very low and Israeli Acute Paralysis virus (IAPV) has not been detected despite the completion of very large scale apiary surveys.
