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Duck Swollen Head Hemorrhagic Disease

Avian Reovirus

Duck Swollen Head Hemorrhagic Disease Overview

Duck viral swollen head hemorrhagic disease (DVSHD) is an acute, highly contagious viral disease of ducks. The disease is caused by duck swollen head hemorrhage disease virus (DSHDV), which is an a type of orthoreovirus, belonging to the family Reoviridae. The disease is characterized by swelling of the head, green diarrhea, 50-100% morbidity, and 40-80% mortality, which may sometimes reach 100%.


Loss of appetite
Bloody secretions of the eye and nares
Facial swelling
Mucoid nasal discharge
Green diarrhea


  • History
  • Clinical signs
  • Physical exam
  • RT-PCR
  • Indirect immunoperoxidase assay (IPA)
  • histopathology
  • electron microscopy
  • Virus isolation


MethodMethod Summary
Supportive care