CCR5 and infection: Risk of infection in people who had this allele was about four times lower (OR = 0.25) than in people with the wild version of the CCR5. This relation was even stronger in women (βCCR5-∆32:women = −1.212), resulting in more than 13 times lower risk of HIV infection among CCR5-∆32 female carriers (e−1.3982–1.2123 = 0.074).