Changes

====Pathogenesis====

====Pathogenesis====

*Probably viral.  

*Probably viral.  

*[[Calici virus]] found in 7-80%, also often find [[picorna virus]] and [[feline immunodeficiency virus ]](FIV)

*[[Calicivirus]] found in 7-80%, also often find [[picorna virus]] and [[feline immunodeficiency virus ]](FIV)

*Probably calici virus that starts it.   

*Probably calici virus that starts it.   

*Also owners often claim develops after 'having cold' prior to it.   

*Also owners often claim develops after 'having cold' prior to it.