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, 16:33, 24 January 2011
==== Pathogenesis ====
*Atypical circovirus: codes for a second protein called '''apoptin'''
*Induces apoptosis of T cells in young chickens
Clinical Signs:
*Anaemia
*Atrophy of thymus and bone marrow
*Intramuscular hemorrhage
==== Epidemiology ====
*'''Endemic worldwide'''
*Transfer is both '''horizontal and vertical'''
==== Control ====
*No satisfactory vaccines
*Management and hygiene factors
[[Category:Avian Viruses]]
[[Category:Lymphoreticular and Haematopoietic Diseases - Birds]]