Several chemokines potentially attract neutrophils during an infection and S. suis infection induces the production of many of them, such as CXCL1 (KC), CXCL2 (MIP-2), CCL2 (MCP-1), CCL3 (MIP-1α), CCL4 (MIP-1β) and CCL5 (RANTES) [7,77,85,86,133,145]. The gene discussed is CCL2; the disease is infection.