Derzsy's disease is caused by a virus from the Parvoviridae family. It affects geese and Muscovy ducks.
The virus is shed in the faeces and thus
transmission is horizontal, via the direct faecal-oral route and also indirectly via fomites. Vertical transmission is also possible.
Clinical disease only occurs in young geese and ducks between birth and 4–5 weeks of age.
Epidemiology [ edit ]
Several genotypes have been described.
The genotype is based upon the sequence of the VP3 protein.
Clinical signs and diagnosis [ edit ]
Acute disease leads to death in most birds between the ages of 7–10 days. Clinical signs are quite limited in those cases. Older animals tend to show severe systemic and neurological signs and diarrhoea.
Adults do not show any clinical signs.
Viral isolation should be attempted for diagnosis, and
immunofluorescence and electron microscopy can confirm the viral infection. Pathological changes may also help the diagnosis.
Treatment and control [ edit ]
No treatment exists for the viral infection.
Antibiotics may help prevent secondary infections.
 Vaccination is available in different forms, usually for naive flocks.
biosecurity measures should be maintained including adequate quarantine, isolation, separation of different age groups and disinfection.
References [ edit ]
^ Liu HM, Wang H, Tian XJ, Zhang S, Zhou XH, Qi KZ, Pan L (2013) Complete genome sequence of goose parvovirus Y strain isolated from Muscovy ducks in China. Virus Genes
^ a b c d e
Derzsy's Disease expert reviewed and published by WikiVet, accessed 10 October 2011.