CCL2 and tuberculosis: The MCP-1 genotype GG was significantly associated with TB in Mexicans (OR = 2.66, 95% CI 1.47–4.79, p = 0.001, Table 3) and marginally associated with disease in Peruvians (OR = 1.43, 95% CI 1.02–2.0, p = 0.036, Table 4).