Camelidae and Cervidae Rabies Suspect – NAVLE Study Guide

Overview and Clinical Importance

Rabies is a fatal viral zoonosis caused by neurotropic viruses of the genus Lyssavirus (family Rhabdoviridae). This disease has profound public health implications and represents a critical area of knowledge for the NAVLE, particularly regarding recognition, diagnosis, and management of suspect cases in camelids (llamas, alpacas) and cervids (deer, elk). Understanding rabies in these species is essential because they often have close contact with humans, lack approved vaccines (requiring off-label use), and present with clinical signs that may differ from those seen in traditional domestic species.

Rabies is 100% fatal once clinical signs appear. There is no treatment, making early recognition of suspect animals and proper post-exposure management essential. Veterinarians must be prepared to recognize neurological signs consistent with rabies, understand proper specimen collection, and implement appropriate quarantine and exposure management protocols.

Etiology and Virology

Rabies virus (RABV) is a bullet-shaped, single-stranded, negative-sense RNA virus belonging to the family Rhabdoviridae and genus Lyssavirus. The virus is approximately 180 nm long and 75 nm in diameter. The viral genome encodes five structural proteins: nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G), and RNA-dependent RNA polymerase (L).