Association between inflammatory airway disease of horses and exposure to respiratory viruses: a case control study

Table 2 Seroprevalence for ERAV, ERBV, and EHV2 in the study population

Exposure	ERAV		ERBV		EHV2
	IAD	CTL	IAD	CTL	IAD	CTL
Positive	15	4	20	11	8	6
Negative	7	9	2	2	14	7
% Positive	*68	31	91	85	36	46
Seroprevalence	54		89		40

Serology was performed on 22/24 horses in the IAD group, serum samples were unavailable for 2 horses. Serology was performed in 13/14 horses in the CTL group, serum samples were unavailable for 1 horse. Percent positive for IAD and CTL groups are given for each virus ; seroprevalence for the population as a whole is also given. Titers considered consistent with infection or exposure were defined as follows: ≥8 for EHV-2, ≥96 for ERAV, and ≥32 for ERBV *Horses with IAD were significantly more likely to have a positive titer (>96) to ERAV (P < 0.03)

ISSN: 2049-6958