Consistent with the present findings that showed that co-infection with Giardia attenuated C. rodentium-induced colonic elevation of MPO, a well-known marker of granulocyte infiltration, recent findings have reported that Giardia was able to cleave CXCL-8, a potent chemoattractant for neutrophils [26]. This evidence concerns the gene CXCL8 and coinfection.