Psittacid alphaherpesvirus has a double-stranded DNA structure. Is the cause of Pacheco’s disease. Replication of the virus occurs in the nucleus of a cell. These viruses primarily infect lymphatic tissue, skin, and nerve cells. Pacheco’s Disease is an acute and often lethal infectious disease in psittacine birds. It was first recognized in Brazil.
Considered highly contagious, Pacheco’s can spread rapidly through an aviary. Transmission of PDV occurs generally through infected feces and nasal discharge.