Univariate analyses for the association of WNV seroprevalence in horses in Israel and the geographical location of the horses along the Great Rift Valley - GRV (1997, 2002, 2013).

OR: odds ratio; CI: confidence interval; P: p value; REF: reference variable; GRV: Great Rift Valley. *Prevalence ratio. Univariate analyses for the association of WNV seroprevalence in horses in Israel and the geographical location of the horses along the Great Rift Valley - GRV (1997, 2002, 2013).