Morphology

• Caliciviruses are small, unenveloped, spherical RNA viruses
• They are recognized by cup-shaped surface depressions

Virulence and Pathogenesis

• Caliciviruses are moderately resistant and can survive in the environment for weeks
• They cause respiratory, enteric, and systemic disease
• Calicivirus may contribute to undifferentiated neonatal calf diarrhoea, a mixed viral enteritis in calves.

Virus by Species

Feline Calicivirus

Rabbit Haemorrhatic Disease Virus