Table 1.

Clinical scoring rubric

Clinical Sign	Score
Conjunctivitisa	0 = None
	1 = Mild
	2 = Moderate
	3 = Severe
Blepharospasma	0 = None
	1 = Eye<25% closed
	2 = Eye 25–50% closed
	3 = Eye 50–75% closed
	4 = Eye completely closed
Ocular dischargea	0 = None
	1 = Mild serous (clear) discharge
	2 = Moderate mucoid (white) discharge
	3 = Severe mucopurulent (moist yellow‐green) discharge
Body temperature (microchip)	0: ≤102.5
	1: >102.5
Cough	0 = None
	1 = Observed
Sneezing (yes/no)	0 = None
	1 = Observed
Nasal dischargea	0 = None
	1 = Mild serous (clear) discharge
	2 = Moderate mucoid (white) discharge
	3 = Severe mucopurulent (moist yellow‐green) discharge or hemorrhagic (bloody/red) discharge
Nasal congestiona (if score varies during observation period, record highest score observed)	0 = None (no congestion present; able to breathe through both nares without difficulty)
	1 = Mild/Minor congestion (barely audible; audible on close listening, subtle snoring sounds on inhalation ANY time during the observation period
	2 = Moderate congestion (easily audible; consistently audible throughout observation period; audible snoring sounds on inhalation or expiration that are likely to originate from the nasal cavity)
	3 = Severe congestion (audible across the room, with or without open mouth breathing; minimal nasal air flow noted from1 or both nares after local debris is cleared away)

^aDue to statistically low occurrence of scores >1, binomial analyses were performed using 0 or 1 to indicate presence or absence of clinical sign.