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Oregon State University
Insect ID Clinic


Honey Bee Diagnostic Services

Bee Virus X and Bee Virus Y

Causative Agent: Virus

Range: Primarily in Great Britain but cases have been reported in North America & Australia

Life cycle/ Symptoms:

  • Both viruses are typically encountered with Nosema infections
  • Bee Virus X is only found in the winter, is more common then and is less virulent then Bee Virus Y
  • Bee Virus Y occurs in May and June in Great Britain
  • Dead bees accumulate beneath and surrounding the hive.


  • Manage to reduce Nosema


Other Useful Sites:

References used:

Morse, R.A. & R. Nowogrodzki (eds). 1990. Honey bee pests, predators and diseases . Cornell University Press Ithaca , NY .


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April 3, 2008