CCR5 and HIV infectious disease: Fourteen days after HIV infection, %CCR5+ increased in CD4 T cells (7.4 ± 1.7 for HIV- vs. 22.5 ± 9.9 for HIV+, P = 0.016) and CD8 T cells (13.2 ± 3.9 for HIV- vs. 53.6 ± 10.0 for HIV+, P = 0.016).