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→Introduction
==Introduction==
==Introduction==
===Feline herpesvirus -1===
*Feline viral rhinotracheitis in [[Nasal cavity - inflammatory#Rhinitis|rhinitis]]
*Feline viral rhinotracheitis in [[Nasal cavity - inflammatory#Rhinitis|rhinitis]]
**One of the causes of Feline viral rhinotracheitis
***Viruses and bacteria are involved in the complex. The most frequent aetiologic agent is FHV-1, and less frequently feline calicivirus and/or ''Chlamydophia psittaci'' (NB: previously called Chlamydia psittaci var felis)
***All three agents infect URT respiratory epithelium, although FHV-1 has the highest affinity for this epithelium
***Feline calicivirus more frequently infects the oral mucosa -> ulcerative stomatitis
***C.psittaci more frequently infects the conjunctival epithelium -> chronic conjunctivitis
***Infection of the respiratory epithelium by FHV-1 results in a typical neutrophilic rhinitis with intraepitheial intranuclear eosinophilic inclusion bodies, with expected clinical signs
***Resolution of clinical signs usually occurs by 7-14 days.
***FHV-1 remains latent in the trigeminal ganglion, and can reactivate at times of stress. Can infect the cornea -> ulcerative keratitis.
***Occasional mortality in kitten or immunocompromised animals usually associated with secondary bacterial infection.
===Bovine herpesvirus -1===
* Bovine herpesvirus - 1 (Infectious bovine rhinotracheitis virus) contributes to [[Intestines - Catarrhal Enteritis#Undifferentiated Neonatal Calf Diarrhoea|undifferentiated neonatal calf diarrhoea]], a mixed viral enteritis in calves; and [[Nasal cavity - inflammatory#Rhinitis|rhinitis]]
* Bovine herpesvirus - 1 (Infectious bovine rhinotracheitis virus) contributes to [[Intestines - Catarrhal Enteritis#Undifferentiated Neonatal Calf Diarrhoea|undifferentiated neonatal calf diarrhoea]], a mixed viral enteritis in calves; and [[Nasal cavity - inflammatory#Rhinitis|rhinitis]]
*Causes '''Infectious bovine rhinotracheitis (IBR)'''
*Causes '''Infectious bovine rhinotracheitis (IBR)'''
*Highly infectious URT disease of cattle
*Highly infectious URT disease of cattle