Table 1.

Clinical scoring system used to monitor for clinical evidence of disease induced by feline herpesvirus 1

Clinical sign	Score
Conjunctivitis	0 = None
	1 = Mild conjunctival hyperemia
	2 = Moderate to severe conjunctival hyperemia
	3 = Moderate to severe conjunctival hyperemia and chemosis
Blepharospasm	0 = None
	1 = Eye <25% closed
	2 = Eye 25–50% closed
	3 = Eye 50–75% closed
	4 = Eye completely closed
Ocular discharge	0 = None
	1 = Minor serous discharge
	2 = Moderate mucoid discharge
	3 = Marked mucopurulent discharge
Sneezing	0 = None
	1 = Observed
Nasal discharge	0 = None
	1 = Minor serous discharge
	2 = Moderate mucoid discharge
	3 = Marked mucopurulent discharge
Nasal congestion	0 = None
	1 = Minor congestion (barely audible)
	2 = Moderate congestion (easily audible)
	3 = Marked congestion with open- mouth breathing
Body temperature	0 = <102.5°F
	1 = >102.5°F