To date, nearly 20 RNA viruses, of mostly, were detected in honeybee (J.J. Bromenshenk et al., 2010), ( ), Bee viral infections worldwide leading to colonies’ depopulation have emerged as a threat , , 2011). <...> The most important bee viruses known to date are deformed wing virus (DWV), acute bee paralysis virus, (ABPV), chronic bee paralysis virus (CBPV), Kashmir bee virus, (KBV), sacbrood virus, (SBV), Black queen cell virus (BQCV). <...> The introduction of infestation causes a viral epidemic, diminishing bee colonies. <...> However, not long ago this mite crossed the species barrier . . to our own Western honey bee into the . . population has become one of the major contributing factors to colony collapse disorder (D. van Engelsdorp et al., 2008; R.M. Johnson et al., 2009; F. Nazzi et al., 2012). <...> At present there is an objective need for a closer look into bee viruses implicated in bee colony losses reported worldwide. <...> In this review, an overview of the world distribution and the impact of the major viruses (DWV, ABPV, CBPV, SBV, BQCV, KBV) on bee health and colony survival is presented. <...> Overall, the strategy combining new Varroa management practices (A.A. Fedorova et al., 2011), selection of Varroa-resistant bees and novel treatments against viruses will help sustain the honey bee population. <...> Кeywords: , To date, nearly 20 RNA viruses, of ), , viruses, viral infection transmission, vectors. , , families mostly, were detected in honeybee ruses also have been found ― iridovirus ( of bee colonies [4], ( [1-3]. <...> Latent viruses can persist in some individuals or in bee family as a whole and not cause the death [9-11]. <...> Importantly, some viruses when influenced by definite but not clearly understood factors can provoke a decrease in bee cold resistance, queen bee reproductive activity, flying activity of bees and nectar collection [12]. 156 (R.S. Poltorzhitskaya, Apis me UDC 638.1 a V :638.15:578 llifera rroa destructor 1Federal Center fo s 2I n t i t u Received August <...>