CXCL8 and Trichiasis: On the other hand the rare IL8-251TT genotype (2.4% population frequency) was associated with reduced risk of scarring trachoma (OR for scarring 0.29, 95% CI = 0.09, 0.87, p = 0.027 and for trichiasis 0.50, 95%CI = 0.04, 5.51, p = 0.571 for IL8-251 TT versus IL8-251 AA+AT).