CCL5 and mastitis: The CCL5 chemokine has been shown to play a role in the inflammatory response to bovine respiratory syncytial virus [58], Alcelaphine herpesvirus 1 [59], mastitis [60–63], bovine tuberculosis [64] and parasitic protozoan infections with Toxoplasma gondii [65], Neospora canium [65] and Eimera bovis [65].