<i>OAS1</i> rs10774671 is associated with increased risk of WNV infection.

OR, odds ratio; CI, confidence interval; ARC, American Red Cross. Values were calculated in comparison to the genotype frequency in 552 healthy North American Caucasian WNV-seronegative control samples. Genetic models assume the ancestral G allele as the reference allele. Recessive, GG and GA genotypes combined; Dominant, GA and AA genotypes combined; Additive, GG versus AG and AG versus AA. ORs calculated using JMP software. *p value calculated using Fisher's exact test. **OR is infinite.