CD4 and HIV infectious disease: In populations that included both MSM and non-MSM (and women [39,43]), HIV infection, including decreasing CD4+ T cell count, younger age, never having had a tonsillectomy[43] living in Mexico compared to USA,[33] smoking,[33] divorced/separated/widowed marital status,[33] increasing education level,[33] history of rimming,[39] bisexuality,[33] and female gender [39] were identified as risk factors for increased oral HPV incidence.