Chicken Anaemia Virus Disease

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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
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