There also have been reports of infection in colubrid, boid, and elapid snakes. Those species reported to be infected are listed. Worldwide in zoological and private collections including United States, Mexico, Argentina, and Germany. Both juveniles and adults. There are no reports of infection in neonates.
Virus replication occurs mainly in the cytoplasm with maturation by budding from the cell membrane.
The size of released particles ranged from 146 to 321 nm in diameter, depending upon the host cell system and the cell culture incubation temperature. Attempts to establish the antigenic relatedness of the 3 isolates to a wide variety of avian and mammalian paramyxoviruses was unsuccessful. During stage 2, which lasted 1 to 2 days, snakes showed abnormal activity. Affected snakes crawled about restlessly and kept their mouths partially opened. Their tongues were incompletely withdrawn into the sheathes and their pupils were extremely dilated.