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(Click for frequent words.) 78 sexually transmitted diseases 77 sexually transmitted infection 74 STDs 69 chlamydia 68 gonorrhea 68 sexually transmitted infections 67 genital herpes 66 STIs 64 herpes 63 syphilis 63 HIV 62 HIV infection 61 STD 61 venereal disease 61 HPV 60 sexually active 60 unprotected sex 60 sexually transmitted infections STIs 59 Chlamydia 59 Syphilis 59 sexually transmitted HPV 58 chlamydia infection 58 cervical cancer 58 venereal diseases 58 genital HPV infection 57 human papillomavirus 57 chlamydia infections 57 syphilis gonorrhea 57 gonorrhea chlamydia 57 trichomonas 57 contracting STDs 56 HPV sexually transmitted 56 Genital herpes 56 infections STIs 56 Sexually Transmitted Disease 56 sexually transmitted 56 sexual transmitted diseases 56 STDS 55 gonorrhea infections 55 STDs sexually transmitted 55 incurable sexually transmitted 55 human papillomavirus HPV 55 meningococcal disease 55 receptive anal intercourse 55 chickenpox 54 Human Papilloma Virus 54 diseases STDs 54 genital HPV 54 chlamydia herpes 54 chancroid 54 infection 53 MRSA infection 53 HIV infections 53 syphilis chlamydia 53 trichomoniasis 53 pelvic inflammatory disease 53 sexually transmitted virus 53 Sexually Transmitted Infections STIs 53 chlamydia gonorrhea 53 pertussis 53 infectious syphilis 53 chlamydial infection 53 sexually transmittable diseases 52 Herpes 52 sexually transmissible 52 human papilloma virus 52 HIV AIDS 52 Human papillomavirus HPV 52 vulvar cancers 52 infections 52 Sexually Transmitted Infections STI 52 Chlamydia infections 52 anal cancer 52 genital human papillomavirus 52 syphillis 52 unprotected anal sex 51 bloodborne diseases 51 genital ulcers 51 unprotected vaginal 51 Chlamydia gonorrhea 51 staph 51 curable sexually transmitted 51 Sexually Transmitted Diseases 51 H.I.V. 51 Chlamydia infection 51 syphilis infections 51 Sexually transmitted infections 51 pertussis whooping cough 51 Sexually transmitted diseases 51 Gonorrhea 51 Circumcised men 51 herpes simplex 51 lymphogranuloma venereum LGV 51 whooping cough 51 staph infections 51 tuberculosis 51 vaginal infection 51 wart virus 50 HIV AIDs 50 Hepatitis C virus 50 Latex condoms 50 Genital warts 50 contracting sexually transmitted 50 mutually monogamous 50 MRSA infections 50 heterosexual 50 communicable disease 50 HIV infected 50 anal warts 50 human papillomaviruses 50 receptive anal sex 50 resistant gonorrhea 50 Anal sex 50 CRKP 50 Peter Kerndt 50 chlamydia sexually transmitted 50 antibiotic resistant staph infections 50 LaCrosse encephalitis 50 genital warts 50 mumps 50 tick borne disease 50 bacterium Treponema pallidum 50 chlamydia trachomatis 50 hiv 50 serosorting 50 Genital HPV 50 STI sexually transmitted 50 anal sex 50 anal HPV 50 barebacking 49 abnormal pap smear 49 Human Papillomavirus 49 streptococcal disease 49 MRSA 49 Chickenpox 49 perinatal transmission 49 HPV infection 49 HPV vaccine 49 abnormal Pap smears 49 AIDS 49 herpes infection 49 unwanted pregnancy 49 unintended pregnancy 49 anal intercourse 49 meningococcal bacteria 49 human immunodeficiency virus 49 strep 49 herpes gonorrhea 49 teen pregnancy 49 bisexual 49 vaginal infections 49 human papillomavirus sexually transmitted 49 transmitted heterosexually 49 Measles 49 bacterial meningitis 49 HIV STD 49 infected 49 contraceptive implants 49 Gardasil vaccinations 49 hepatitis C 49 hepatitis 49 STD sexually transmitted 49 contagious disease 48 hepatitis B 48 cervical HPV 48 tick borne illness 48 bacterial vaginosis 48 unprotected anal intercourse 48 Meningococcal Meningitis 48 Human papilloma virus 48 HPV infects 48 vaginal anal 48 Hepatitis B 48 measles 48 oropharyngeal cancers 48 virus 48 neonatal herpes 48 antibiotic resistant staph 48 chlamydial infections 48 chicken pox 48 sexually transmitted human papillomavirus 48 urethritis 48 oral contraceptives Femcon Fe 48 Sexually active 48 circumcised 48 cervical vulvar 48 sexual intercourse 48 Pertussis 48 hepatitis C infections 48 herpes chlamydia 48 rubella 48 untreated gonorrhea 48 cervical vaginal 48 MRSA staph infection 48 swine flu 48 Anal cancer 48 MSMs 48 penile anal 47 Staph infections 47 genital HPV infections 47 meningococcal 47 hepatitis B. 47 yeast infection 47 untreated chlamydia 47 heterosexual intercourse 47 Valacak 47 unprotected receptive anal 47 latent tuberculosis 47 Staph infection 47 pertussis vaccination 47 disease 47 Hepatitis 47 HPV Human Papillomavirus 47 HIV serostatus 47 Cervical cancer 47 Teenage pregnancy 47 HPV# 47 pap smear 47 teenage pregnancies 47 knowingly infecting 47 Human Papillomavirus HPV 47 unprotected anal 47 Hepatitis C 47 genital ulcer disease 47 lymphogranuloma venereum 47 Hib meningitis 47 genital piercing 47 meningitis 47 vaginal cancers 47 rotavirus diarrhea 47 genital ulcer 47 heterosexuals 47 immunosuppressed patients 47 Tuberculosis 47 HPV infections 47 mosquito borne viruses 47 unwanted pregnancies 47 west nile virus 47 chlamydia gonorrhea syphilis 47 tick borne illnesses 47 experimental therapeutics Ampligen 47 bacterial vaginosis BV 47 heterosexually acquired HIV 47 H1 N1 virus 47 pneumococcal infection 47 penile cancer 47 systemic scleroderma 47 heterosexually acquired 47 TB germ 47 Human Papilloma Virus HPV 47 invasive cervical cancer 47 oral herpes 47 serostatus 46 unintended pregnancies 46 HIV prevalence 46 condom 46 STD prevention 46 genital herpes infections 46 anal cancers 46 chlamydia syphilis 46 reinfection 46 human papillomavirus HPV vaccine 46 Cipro resistant 46 Unprotected sex 46 invasive pneumococcal disease 46 hep B 46 causes genital warts 46 rectal gonorrhea 46 H1 N1 flu 46 infertility 46 gonorrhea Chlamydia 46 unplanned pregnancy 46 influenza 46 herpes virus 46 Padieu 46 WNV infections 46 Unvaccinated 46 STD Prevention 46 teenage pregnancy 46 tuberculosis TB 46 staph infection MRSA 46 pulmonary TB 46 genital infections 46 novel H#N# influenza 46 sex 46 Whooping Cough 46 hepatitis C. 46 HSV2 46 human papilloma 46 venereum 46 Shigellosis 46 strep bacteria 46 pertussis immunizations 46 unprotected sexual intercourse 46 transmittable diseases 46 hepatitis B infection 46 latent TB 46 hantavirus infection 46 Human Virus HPV 46 Trichomonas vaginalis 46 HPV vaccination 46 Francie Wise 46 HINI flu 46 syphilis gonorrhea chlamydia 46 mosquito borne disease 46 Sexually Transmitted Diseases STDs 46 MDR tuberculosis 46 orchitis 46 Staphylococcus aureus MRSA 46 Circumcision reduces 45 h#n# virus 45 penile cancers 45 mosquito borne illness 45 vulvar cancer 45 swine Flu 45 oral sex 45 circumcision 45 causes genital herpes 45 Meningococcal disease 45 inSPOT 45 sexted 45 infectious disease 45 blood borne diseases 45 virginity pledgers 45 Unplanned pregnancies 45 girlfriend Ilya Dall 45 A/H#N# virus 45 molluscum 45 Pap smear screening 45 HIV prevention 45 antibiotic resistant infection 45 varicella vaccine 45 childbed fever 45 Lyme disease 45 Rocky Mountain Spotted Fever 45 papilloma virus 45 condoms 45 pneumococcal meningitis 45 intercourse 45 Chlamydia trachomatis 45 genital wart 45 vaccinated 45 Bacterial meningitis 45 contraception 45 mosquito borne virus 45 Hep C. 45 Pap tests 45 H#N# swine flu 45 highly communicable 45 H Pylori 45 La Crosse encephalitis 45 preventing unwanted pregnancies 45 oral anal 45 H#N# flu 45 toxoplasmosis 45 Tuberculosis TB 45 Influenza H#N# 45 abnormal Pap tests 45 S. aureus infections 45 B strep 45 Gonorrhoea 45 Hib disease 45 Vaginal gel 45 Marburg haemorrhagic fever 45 Drug resistant tuberculosis 45 antibiotic resistant bacterial infection 45 rabies 45 benign genital wart 45 Human papillomavirus 45 HIV AIDS prevention 45 syphilis herpes 45 sextortion 45 antibiotic resistant MRSA 45 GUM clinics 45 MRSA colonization 45 controversial MMR jab 45 Typhoid fever 45 uncircumcised males 45 Sexually Transmitted Infection 45 CMV infection 45 invasive meningococcal disease 45 pandemic H#N# influenza 45 influenza A/H#N# 44 Pubic lice 44 serodiscordant couples 44 vaginal intercourse 44 Gardasil vaccine 44 shigellosis 44 antibiotic resistant staph infection 44 meningococcal infection 44 drug resistant staph 44 sexually transmittable 44 syphilis sexually transmitted 44 gonorrhea syphilis 44 bacterial infection 44 blood borne pathogen 44 herpes zoster 44 pneumococcal pneumonia 44 pap smears 44 HIV AIDS epidemic 44 prescribing Truvada 44 swine flue 44 whooping cough booster 44 hep C 44 USA# strain 44 Jeffrey Klausner 44 flu 44 transmitted infections 44 sexual 44 discordant couples 44 herpes simplex virus 44 drug resistant TB 44 Tdap vaccine 44 hepatitis C infection 44 HPV genotypes 44 TB 44 anal vaginal 44 Chlamydia Gonorrhea 44 C. difficile infection 44 communicable diseases 44 nosocomial infection 44 CA MRSA 44 unplanned pregnancies 44 needle phobia 44 postexposure prophylaxis 44 untreated tooth decay 44 Pap smears 44 antibiotic resistant strain 44 staphylococcus bacteria 44 pertussis booster 44 STIs sexually transmitted 44 MRSA methicillin resistant Staphylococcus 44 pneumocystis pneumonia 44 sexual transmitted infections 44 RMSF 44 highly contagious 44 condom breakage 44 contagious diseases 44 cervical lesions 44 condom usage 44 homosexually 44 whooping cough pertussis 44 methicillin resistant staphylococcus aureus 44 intravenous drug 44 meningoencephalitis 44 HBV infection 44 Male circumcision 44 puerperal fever 44 fungal meningitis 44 herpes hepatitis 44 AIDS Acquired Immune 44 H#N#virus 44 Hepatitis E 44 LeBailly 44 H#N# Swine flu 44 unwed pregnancies 44 serodiscordant 44 abnormal Pap smear 44 Clostridium difficile infection 44 vaccine preventable diseases 44 foodborne diseases 44 male circumcision reduces 44 Untreated chlamydia 44 Sexually Transmitted Infections 44 sexually promiscuous 44 lyssavirus 44 drug resistant tuberculosis 44 MRSA bacteria 44 oncogenic HPV 44 acquire genital HPV 44 carbapenem resistant Klebsiella pneumoniae 43 Hiv 43 multidrug resistant strains 43 Tdap booster 43 giardiasis 43 Pap smear 43 MDR TB 43 influenza A/H#N# virus 43 PrEP 43 gonorrhea chlamydia syphilis 43 multidrug resistant TB 43 HIV diagnoses 43 HPV human papillomavirus 43 oropharyngeal cancer 43 trich 43 AIDS epidemic 43 contracted herpes 43 Aortic dissection 43 campylobacter jejuni 43 shigella 43 staph superbug 43 HIV Aids 43 childhood immunizations 43 Chickenpox vaccine 43 HBV carriers 43 deadly superbug MRSA 43 Pneumocystis pneumonia 43 vaginitis 43 abnormal vaginal bleeding 43 cervical cancer genital warts 43 Hepatitis C. 43 non pledgers 43 bellybutton piercing 43 uninfected spouse 43 rubella immunization 43 noro virus 43 varicella 43 pregnancy 43 HIV superinfection 43 Toxoplasmosis 43 h#n# 43 septicemic plague 43 H1NI flu 43 pandemic influenza virus 43 Noro virus 43 contracting meningococcal disease 43 Nonoxynol 9 43 methicillin resistant Staphylococcus aureus 43 Gardasil prevents 43 Pertussis whooping cough 43 H1 N1 43 unfaithful husbands 43 premarital sex 43 cutaneous anthrax 43 circumcised males 43 pneumococcal bacteria 43 chickenpox vaccine 43 C. diff 43 navel piercing 43 bacterial sexually transmitted 43 Measles Mumps 43 dental decay 43 microbicide gels 43 wedlock pregnancies 43 whooping cough vaccinations 43 parasitic disease 43 influenza meningococcal disease 43 pertussis Tdap vaccine 43 Ciguatera poisoning 43 unclean needles 43 Dengue fever 43 chicken pox vaccine 43 pandemic H#N# virus 43 chlamydia screening 43 pneumonia tetanus 43 genital lesions 43 neuroinvasive disease 43 West Nile encephalitis 43 Hao Yang 43 gonococcal infection 43 HIV AIDS prevalence 43 staph bacterium 43 superstrain 43 H#N# 43 typhoid fever 43 herpes syphilis 43 invasive pneumococcal 43 Candida species 43 adolescent females 43 communicable disease control 43 Dr. Susan Buchbinder 43 Premature ejaculation 43 paternal discrepancy 43 Shigella 43 HPV vaccines 42 Philippe Padieu 42 staph bacteria 42 WNV infection 42 staph germ 42 drug resistant Staph 42 meningococcal meningitis 42 equine WNV 42 prevalent sexually transmitted 42 contaminated needles 42 mumps measles 42 breast caner 42 C. difficile bacterium 42 Highly contagious 42 Hantavirus 42 HPV strains 42 H#N# virus 42 Typhus 42 spermicide nonoxynol 9 42 bacterial pneumonia 42 IDUs 42 pharyngeal cancer 42 precancerous cervical lesions 42 reinfected 42 nosocomial infections 42 bacterium Chlamydia trachomatis 42 GUM clinic 42 nonconsensual sex 42 varicella infection 42 lesbianism 42 tuberculosis strep throat 42 superbug Clostridium difficile 42 unimmunised 42 undergone FGM 42 Whooping cough pertussis 42 pneumococcal diseases 42 whooping cough immunization 42 Infection 42 male circumcision 42 Staph 42 streptococcus pneumoniae 42 O# strain 42 condomless 42 homosexually active 42 H1NI 42 H#N# mutates 42 Clostridium sordellii 42 MMR vaccinations 42 arboviral 42 BRCA mutation 42 H1NI influenza 42 West Nile Virus 42 highly pathogenic avian flu 42 infecting 42 sickle trait 42 Sexually Transmitted 42 Recombinant interferon alpha 42 MMR jabs 42 Testicular cancer 42 Metro TeenAIDS 42 Hep C 42 Mumps 42 neonaticide 42 Opportunistic infections 42 hepatitis B vaccinations 42 meningococcal immunization 42 Swine Flu 42 Influenza immunization 42 falciparum malaria 42 E.coli bacterial infection 42 contagious bacterial 42 Kimberly Bergalis 42 generalized epidemic 42 bubonic plague 42 Sexually transmitted 42 unsterile equipment 42 Bonnie Halpern Felsher 42 Tdap vaccination 42 abnormal pap 42 diarrheal illness 42 Scabies 42 Female genital mutilation 42 abnormal mammogram 42 HIN1 virus 42 biphobia 42 Pneumococcal disease 42 golden staph 42 simplex virus 42 penetrative sex 42 AIDs 42 varicella vaccination 42 pneumococcal strains 42 bacterium Neisseria meningitidis 42 shingles herpes zoster 42 Staphylococcus Aureus 42 Hepatitis B virus 42 mosquito bites 42 unwed pregnancy 42 superbug 42 cervical cancers 42 perinatally infected 42 Head lice 42 polio measles mumps 42 gum disease 42 Virginity pledges 42 bacterial infections 42 waterborne parasite 42 lassa fever 42 preventing unplanned pregnancies 42 whooping cough outbreak 42 Clostridium difficile bacteria 42 Heterosexual transmission 42 diseases diphtheria tetanus 42 germ methicillin resistant 42 pertussis Tdap 42 Circumcision 42 CA MRSA infections 42 Influenza Type 42 frequent Pap smears 42 latent TB infection 42 polio measles mumps rubella 42 faking orgasms 42 unwanted pregnancies sexually transmitted 42 spokeswoman Jessica Frickey 42 Herpes simplex virus 42 rotavirus 42 cyberbullied 42 PAP smear 42 viral haemorrhagic fevers 42 measles outbreak 42 vaccinations 42 vaccination 42 quadrivalent vaccine 42 Mouth Disease HFMD 42 Male infertility 42 Falciparum malaria 42 tick borne diseases 42 Trichomoniasis 42 contagious equine metritis 42 Vaccine preventable diseases 42 pregnant 42 multidrug resistant strain 42 Hep B 42 child transmission MTCT 42 AH#N# virus 42 B streptococci 42 pregnancies 42 tetanus booster 42 herpes zoster vaccine 42 dengue hemorrhagic fever 42 vaginal 42 MRSA bacterium 42 Handsfield 42 Smallpox vaccine 42 human papillomaviruses HPV 41 Methicillin resistant 41 H. pylori 41 C. sordellii 41 HPV vaccinations 41 virginity pledge 41 mutated virus 41 pneumococcal disease 41 paraphilias 41 parasite cryptosporidium 41 varicella chicken pox 41 Sexual intercourse 41 scabies 41 Bieber Fever 41 Depo Provera injections 41 vibrio cholera 41 H#N# influenza virus 41 resistant staphylococcus aureus 41 streptococcus bacteria 41 hepatitis B hepatitis C 41 rabid animal 41 herpes outbreaks 41 untreated syphilis 41 flu virus 41 Pneumococcus 41 Vibrio infections 41 Canine influenza 41 malaria 41 antibiotic methicillin 41 contagious viral infection 41 Antibiotic resistant bacteria 41 pertussis vaccinations 41 C. difficile colitis 41 pre cancerous lesions 41 venous blood clots 41 C diff infection 41 C. diff infection 41 disfiguring disease 41 sero status 41 uterine cancer 41 Cryptosporidiosis 41 Methicillin 41 antibiotic resistant 41 human papillomavirus vaccine 41 sexual victimization 41 cervical abnormalities 41 unwanted teenage pregnancies 41 Shigella bacteria 41 Communicable diseases 41 anal lesions 41 teen pregnancies 41 sometimes symptomless infection 41 Human Papilloma virus 41 Pneumocystis carinii pneumonia 41 mutually monogamous relationship 41 Meningococcal 41 hepatitis B virus HBV 41 abused inhalants 41 H#N# influenza 41 gonococcal infections 41 sexting 41 post exposure prophylaxis 41 insertive partner 41 varicella virus 41 human metapneumovirus 41 Dengue hemorrhagic fever 41 dengue hemorrhagic fever DHF 41 teen birthrate 41 Pneumococcal meningitis 41 cold sores 41 vaccine Zostavax 41 H#N# Virus 41 antibiotic resistant superbug 41 preterm labor 41 Donnar 41 viral meningitis 41 respiratory viruses 41 chlamydia genital herpes 41 contraceptive 41 Infections 41 Bubonic plague 41 Drug resistant strains 41 A/H#N# flu 41 Acquired Immune Deficiency Syndrome 41 impetigo 41 users IDUs 41 C. Diff 41 pneumococcus 41 Xiang Sheng Chen 41 Hepatitis B. 41 tick bites 41 WNv 41 Reye Syndrome 41 insertive 41 dengue fever 41 whooping cough vaccine 41 neuroinvasive form 41 Marburg fever 41 latent homosexuality 41 Clostridium difficile infections 41 Swine flu viruses 41 serogroup C 41 Streptococcus pneumoniae 41 Regular checkups 41 HIV seroprevalence 41 West Nile virus 41 virus RSV 41 pneumococcal vaccination 41 Tdap 41 consentual sex 41 bug Clostridium difficile 41 Marburg virus 41 gynecological exams 41 Chikungunya fever 41 sulfone drugs 41 monkeypox virus 41 yeast infections 41 waterpipe tobacco smoking 41 Dr Muraguri 41 genital piercings 41 dengue haemorrhagic fever 41 Antibiotic resistant infections 41 HPVs 41 Genital Herpes 41 HAV infection 41 Circumcising 41 stds 41 N#H# virus 41 P. falciparum malaria 41 salmonella infection 41 pap tests 41 Hurried Woman Syndrome 41 nosocomial hospital 41 C diff infections 41 hereditary breast cancer 41 Fecal incontinence 41 perinatally 41 nonsexual 41 inhalant abuse 41 H1NI virus 41 influenza immunization 41 Meningococcemia 41 sexually victimized 41 A/H#N# flu virus 41 prevent unwanted pregnancies 41 Measles mumps 41 anorexia 41 anal penile 41 resistant staph infections 41 west nile 41 abnormal Pap 41 neonatal circumcision 41 Peanut allergy 41 multidrug resistant organisms 41 perinatal depression 41 whooping cough vaccination 41 deafness neurological 41 Hepatitis C infections 41 Rotavirus 41 TB bacilli 41 diphtheria booster 41 Fusarium Keratitis 41 Gender Identity Disorder 41 Neisseria meningitides 41 unexplained illnesses 41 haemorrhagic fever 41 faecal oral route 41 seroconverted 41 Heterosexual 41 campylobacter infections 41 flulike illness 41 A/H#N# influenza 41 abnormal cervical 41 herpes zoster shingles 41 Gardasil protects 41 deadly Hendra virus 41 bacteria Neisseria meningitidis 41 seasonal influenza 41 Preventable diseases 41 zoonotic disease 41 Rotavirus infection 41 chikungunya virus 41 Rubella 41 multidrug resistant 41 contraceptive injections 41 pulmonary tuberculosis 41 staph aureus 41 HI Virus 41 Fenstersheib 41 resistant staphylococcus 41 Helicobacter pylori H. pylori 41 dirty needles 41 sexuality 40 staph infection 40 mosquito borne infection 40 Clade B 40 cervical cancer vaccine 40 causes chickenpox 40 Influenza vaccination 40 ebola virus 40 Halpern Felsher 40 Seasonal influenza 40 diagnosable mental disorder 40 transmitted diseases 40 diphtheria pertussis 40 Respiratory syncytial virus RSV 40 XDR tuberculosis 40 vulvar pain 40 Urinary tract infections UTIs 40 bacterial pneumonias 40 HIV Aids epidemic 40 vancomycin resistant enterococcus 40 cooties 40 abusing inhalants 40 Inhaled anthrax 40 sexual intercourses 40 shigella bacteria 40 PAP smears 40 Noroviruses 40 varicella zoster virus VZV 40 adenovirus infections 40 Listeria infections 40 methicillin resistant aureus 40 HPV subtypes 40 tetanus boosters 40 Chlamydia trachomatis infection 40 E.coli bug 40 homosexual 40 E.coli O# infection 40 deadly Marburg virus 40 extramarital sex 40 CIN3 40 febrile illness 40 shingles vaccine 40 resistant tuberculosis 40 meningococcal conjugate vaccine 40 CDAD 40 Chagas disease 40 ehrlichiosis 40 tooth decay 40 Staphylococcus aureus infections 40 spokeswoman Liz Sharlot 40 invasive pneumococcal infections 40 udder infection 40 chronic hepatitis 40 unimmunized 40 aureus MRSA 40 tetanus 40 Staphylococcal infections 40 Dr. Wilma Wooten 40 tubal pregnancy 40 CDC Swine flu 40 Salmonella enteritidis 40 swine brucellosis 40 Dr. Lon Kightlinger 40 Salmonella poisoning 40 trivalent inactivated influenza 40 MMR measles mumps 40 TRIAD HELP GROUP 40 raccoon rabies 40 C difficile infection 40 smallpox vaccination 40 intrauterine infection 40 pelvic examinations 40 MCV4 40 latent tuberculosis infection 40 HINI virus 40 Chicken pox 40 mosquito transmitted 40 coinfection 40 invasive MRSA infections 40 anovulatory infertility 40 Intestinal worms 40 prostate biopsies 40 Prevent Teen Pregnancy 40 underage binge drinking 40 unmarried cohabiting 40 babesiosis 40 elephant herpes virus 40 YRBS 40 resistant TB