IL6 and infection: Therefore, it seems the typical presentation of human patients infected with either virus includes high levels of CXCL10, CCL2, IL-6, and CXCL8 in the plasma, peripheral blood leukopenia, and lung neutrophilia (65, 69, 81, 129, 130, 132), and this is also similar to experimental infection of laboratory animal models (111, 133).