These viruses are commonly known as feline distemper and the three major upper respiratory viruses affecting cats. (tampabayvets.net)
A conjunctival swab can be used to detect feline upper respiratory viruses; feces can be used to identify the causative agent of diarrhea. (amcny.org)
Calici virus is a nasty little upper respiratory virus that can cause ulcers in the mouth, throat, on the tongue, and the nasal passages that are very painful. (allfelinehospital.com)