Related by context. Frequent words. (Click for all words.) 62 anal intercourse 60 vaginal secretions 58 unprotected anal sex 57 unprotected sexual intercourse 57 sexual intercourse 57 penetrative sex 56 Sexual intercourse 54 homosexual intercourse 54 Nothing vulgar obscene 54 heterosexual intercourse 54 genital tract 54 intercourse 54 vaginal penetration 53 Sexually active 53 bacterial vaginosis 53 unprotected intercourse 53 Genital herpes 53 vaginal cancers 53 HPV# 52 deviate sexual intercourse 52 valacyclovir 51 vaginal intercourse 51 vaginal infections 51 rectally 51 seropositive 51 HBV infection 51 unprotected sex 50 Chlamydia trachomatis 50 genital herpes 50 sexually transmitted infection 50 consenting adult 50 CMV infection 50 virologic failure 50 contaminated needles 50 anal sex 50 prevalences 50 Human Papilloma Virus 50 sexually transmitted 50 herpes infection 49 anal penetration 49 sexually transmitted infections 49 sexually active 49 pelvic inflammatory disease 49 heterosexual 49 anal cancers 49 Carrie Rickey 49 chemoprophylaxis 49 Human Papillomavirus 49 seroconversion 49 external genitalia 49 uncircumcised men 49 luteal phase 49 HPV infections 49 menstrual bleeding 49 causes genital warts 49 lipoatrophy 48 candidiasis 48 events SAEs 48 sexually transmitted diseases 48 reinfection 48 VUR 48 % CI #.#-#.# [006] 48 vaginal 48 vaginal infection 48 congenital syphilis 48 HIV infection 48 coinfected 48 % CI #.#-#.# [003] 48 gonorrhea 48 sexually transmitted infections STIs 48 sexual 48 vaginitis 48 herpes infections 48 #.# subd [002] 48 acquired immunodeficiency syndrome 47 IPV 47 HPV infection 47 undetectable viral load 47 varicella vaccine 47 HBV DNA 47 papillomavirus 47 genital organs 47 extramarital sex 47 PREZISTA r 47 sexually transmitted disease 47 Avoid lewd obscene 47 oropharyngeal cancer 47 endometrial cancers 47 STDs 47 unexplained infertility 47 nonconsensual sex 47 sex 47 antibody titers 47 causes chickenpox 47 hiv 47 cystectomy 46 adenoma 46 prostatic 46 oophorectomy 46 viremia 46 STIs