Hemorrhagic nephritis and enteritis in a goose flock in Poland--disease course analysis and characterization of etiologic agent.

Hemorrhagic nephritis enteritis of geese (HNEG) is an epizootic viral disease caused by infection with goose hemorrhagic polyomavirus (GHPV) that affects domestic geese. This study describes the epizootic analysis, laboratory diagnosis, and molecular characterization of GHPV isolates associated with HNEG cases in Poland. HNEG symptoms persisted in infected flocks for 2 wk with a 32% mortality rate. Primary gross lesions included hemorrhaging of the kidneys, intestines, and lungs. Histopathologic examination confirmed HNEG and identified that the causative agent was similar to other GHPV isolates and identical to the Toulouse 2008 isolate.