Neutrophils are recruited to the site of infection by epithelial cells that secrete pro-inflammatory cytokines and chemokines during Chlamydia infection, such as IL-8 (also called chemokine (C-X-C motif) ligand 8 (CXCL8)), IL-6, CXCL1, CXCL2, and CXCL5 [60,61,62,63]. The gene discussed is CXCL8; the disease is infection.