A necrotizing pneumonia was observed in a domestic cat which had a clinical
history of severe respiratory distress. Histology, immunohistology and ele
ctronmicroscopy revealed poxvirus as the causative agent. By the polymerase
chain reaction and gene sequencing, an orthopox virus with 93% homology to
cowpox virus was identified. (C) 1999 W.B. Saunders Company Limited.