| 736 | Humans |
| 582 | HIV Infections |
| 542 | Female |
| 482 | Male |
| 459 | South Africa |
| 406 | Adult |
| 242 | Adolescent |
| 227 | Middle Aged |
| 211 | Young Adult |
| 170 | Socioeconomic Factors |
| 141 | Anti-HIV Agents |
| 117 | Risk Factors |
| 109 | HIV-1 |
| 109 | Child |
| 105 | Acquired Immunodeficiency Syndrome |
| 95 | Surveys and Questionnaires |
| 91 | Cross-Sectional Studies |
| 91 | CD4 Lymphocyte Count |
| 90 | Prevalence |
| 82 | Health Knowledge, Attitudes, Practice |
| 81 | AIDS-Related Opportunistic Infections |
| 78 | Antiretroviral Therapy, Highly Active |
| 75 | Pregnancy |
| 73 | Rural Population |
| 67 | Infant |
| 66 | Sexual Behavior |
| 64 | Aged |
| 61 | Viral Load |
| 60 | Child, Preschool |
| 55 | Tuberculosis |
| 52 | Anti-Retroviral Agents |
| 51 | Qualitative Research |
| 48 | Health Services Accessibility |
| 46 | Interviews as Topic |
| 44 | Prospective Studies |
| 44 | HIV Seropositivity |
| 43 | Incidence |
| 42 | Counseling |
| 41 | Medication Adherence |
| 40 | Social Support |
| 40 | Retrospective Studies |
| 40 | Infectious Disease Transmission, Vertical |
| 40 | Cohort Studies |
| 39 | Sexual Partners |
| 39 | Patient Acceptance of Health Care |
| 38 | Sex Factors |
| 38 | Africa South of the Sahara |
| 36 | Treatment Outcome |
| 34 | Social Stigma |
| 34 | Risk-Taking |
| 33 | Pregnancy Complications, Infectious |
| 31 | Poverty |
| 31 | HIV |
| 31 | Focus Groups |
| 31 | Developing Countries |
| 29 | Age Factors |
| 28 | Urban Population |
| 28 | Time Factors |
| 28 | Mass Screening |
| 28 | Infant, Newborn |
| 28 | Condoms |
| 27 | African Continental Ancestry Group |
| 26 | Population Surveillance |
| 26 | Caregivers |
| 25 | Logistic Models |
| 25 | Follow-Up Studies |
| 25 | Antitubercular Agents |
| 22 | Longitudinal Studies |
| 22 | AIDS Vaccines |
| 20 | Family Characteristics |
| 19 | Tuberculosis, Pulmonary |
| 19 | Health Policy |
| 19 | Disease Progression |
| 19 | AIDS Serodiagnosis |
| 18 | Quality of Life |
| 18 | Multivariate Analysis |
| 18 | Aged, 80 and over |
| 17 | RNA, Viral |
| 17 | Prejudice |
| 17 | Patient Compliance |
| 17 | Mycobacterium tuberculosis |
| 17 | Disease Outbreaks |
| 17 | Cause of Death |
| 17 | Africa |
| 16 | Program Evaluation |
| 16 | Genotype |
| 16 | Communication |
| 16 | Animals |
| 16 | Alcohol Drinking |
| 15 | Mothers |
| 15 | Global Health |
| 15 | Educational Status |
| 15 | Depression |
| 15 | Coinfection |
| 15 | Child, Orphaned |
| 15 | Case-Control Studies |
| 15 | Age Distribution |
| 14 | Zambia |
| 14 | Unsafe Sex |
| 14 | Tenofovir |
| 14 | Stereotyping |
| 14 | Sexually Transmitted Diseases |
| 14 | Primary Health Care |
| 14 | Mental Disorders |
| 14 | Health Promotion |
| 14 | Delivery of Health Care |
| 14 | Attitude to Health |
| 13 | Zimbabwe |
| 13 | Substance-Related Disorders |
| 13 | Sex Distribution |
| 13 | Pilot Projects |
| 13 | Interpersonal Relations |
| 13 | International Cooperation |
| 13 | Homosexuality, Male |
| 13 | Culture |
| 13 | Adaptation, Psychological |
| 12 | Women's Health |
| 12 | Truth Disclosure |
| 12 | Regression Analysis |
| 12 | Randomized Controlled Trials as Topic |
| 12 | HIV Antibodies |
| 12 | Drug Therapy, Combination |
| 12 | Comorbidity |
| 12 | Benzoxazines |
| 12 | Attitude of Health Personnel |
| 11 | Vulnerable Populations |
| 11 | Uganda |
| 11 | Health Surveys |
| 11 | Health Personnel |
| 11 | Community Health Workers |
| 11 | Clinical Trials as Topic |
| 10 | gag Gene Products, Human Immunodeficiency Virus |
| 10 | Reproducibility of Results |
| 10 | Psychiatric Status Rating Scales |
| 10 | Prognosis |
| 10 | Prenatal Care |
| 10 | Medicine, African Traditional |
| 10 | Health Education |
| 10 | Drug Resistance, Viral |
| 10 | Demography |
| 10 | Circumcision, Male |
| 10 | Adolescent Behavior |
| 10 | AIDS Dementia Complex |
| 9 | Stress, Psychological |
| 9 | Spouse Abuse |
| 9 | Social Environment |
| 9 | Severity of Illness Index |
| 9 | Sensitivity and Specificity |
| 9 | Schools |
| 9 | Sarcoma, Kaposi |
| 9 | Safe Sex |
| 9 | Rural Health |
| 9 | Reverse Transcriptase Inhibitors |
| 9 | Residence Characteristics |
| 9 | Nevirapine |
| 9 | Epidemiologic Methods |
| 9 | Drug Administration Schedule |
| 9 | Community Health Services |
| 9 | Child of Impaired Parents |
| 9 | CD4-Positive T-Lymphocytes |
| 9 | Breast Feeding |
| 8 | Treatment Failure |
| 8 | Survival Analysis |
| 8 | Sputum |
| 8 | Sex Education |
| 8 | Risk |
| 8 | Risk Assessment |
| 8 | Pre-Exposure Prophylaxis |
| 8 | Politics |
| 8 | Perception |
| 8 | Odds Ratio |
| 8 | Motivation |
| 8 | Mortality |
| 8 | Microbial Sensitivity Tests |
| 8 | Isoniazid |
| 8 | Home Care Services |
| 8 | Health Services Needs and Demand |
| 8 | Health Care Surveys |
| 8 | HIV Seroprevalence |
| 8 | HIV Protease Inhibitors |
| 8 | Enzyme-Linked Immunosorbent Assay |
| 8 | Early Diagnosis |
| 8 | Cost-Benefit Analysis |
| 8 | Community Networks |
| 8 | Anti-Infective Agents |
| 7 | Viremia |
| 7 | Sex Work |
| 7 | Risk Reduction Behavior |
| 7 | Research Design |
| 7 | Referral and Consultation |
| 7 | Quality of Health Care |
| 7 | Public Health |
| 7 | Proportional Hazards Models |
| 7 | Pregnant Women |
| 7 | Polymorphism, Single Nucleotide |
| 7 | Policy Making |
| 7 | Obesity |
| 7 | Meningitis, Cryptococcal |
| 7 | Maternal Mortality |
| 7 | Maternal Health Services |
| 7 | Lymphocyte Activation |
| 7 | Lost to Follow-Up |
| 7 | Leadership |
| 7 | Lamivudine |
| 7 | Kidney Diseases |
| 7 | Immune Reconstitution Inflammatory Syndrome |
| 7 | Health Status |
| 7 | Food Supply |
| 7 | Endemic Diseases |
| 7 | Diarrhea |
| 7 | Decision Making |
| 7 | Data Collection |
| 7 | Chronic Disease |
| 7 | Africa, Southern |
| 6 | Uterine Cervical Neoplasms |
| 6 | Students |
| 6 | Stavudine |
| 6 | Sentinel Surveillance |
| 6 | Professional-Patient Relations |
| 6 | Practice Guidelines as Topic |
| 6 | Power (Psychology) |
| 6 | Phytotherapy |
| 6 | Phylogeny |
| 6 | Outcome Assessment (Health Care) |
| 6 | Neoplasms |
| 6 | Needs Assessment |
| 6 | Motor Activity |
| 6 | Mental Health |
| 6 | Income |
| 6 | Hypertension |
| 6 | Heterosexuality |
| 6 | Health Services Research |
| 6 | Health Behavior |
| 6 | Genetic Predisposition to Disease |
| 6 | Forecasting |
| 6 | Fear |
| 6 | Family |
| 6 | Evaluation Studies as Topic |
| 6 | European Continental Ancestry Group |
| 6 | Ethiopia |
| 6 | Epidemics |
| 6 | Depressive Disorder |
| 6 | Cost of Illness |
| 6 | Communicable Disease Control |
| 6 | Cluster Analysis |
| 6 | Child Welfare |
| 6 | Chi-Square Distribution |
| 6 | Biomedical Research |
| 6 | Biomarkers |
| 6 | Anti-Bacterial Agents |
| 6 | Ambulatory Care |
| 6 | Ambulatory Care Facilities |
| 6 | Algorithms |
| 6 | Alcoholism |
| 6 | Africa, Eastern |
| 5 | Virus Replication |
| 5 | Trimethoprim, Sulfamethoxazole Drug Combination |
| 5 | Tertiary Care Centers |
| 5 | Tanzania |
| 5 | Smoking |
| 5 | Sexuality |
| 5 | Sex Offenses |
| 5 | Sequence Analysis, DNA |
| 5 | Self Efficacy |
| 5 | Sampling Studies |
| 5 | Ritonavir |
| 5 | Program Development |
| 5 | Polymerase Chain Reaction |
| 5 | Point-of-Care Systems |
| 5 | Plant Extracts |
| 5 | Peer Group |
| 5 | Patient Education as Topic |
| 5 | Parents |
| 5 | Pain |
| 5 | Organophosphonates |
| 5 | Mutation |
| 5 | Morbidity |
| 5 | Models, Biological |
| 5 | Lopinavir |
| 5 | Leukocytes, Mononuclear |
| 5 | Intention |
| 5 | Hospitalization |
| 5 | History, 21st Century |
| 5 | Hepatitis B |
| 5 | Healthcare Disparities |
| 5 | Health Status Disparities |
| 5 | Health Services |
| 5 | Health Facilities |
| 5 | Genetic Variation |
| 5 | Gene Frequency |
| 5 | Disclosure |
| 5 | Cytokines |
| 5 | Confidentiality |
| 5 | Cardiovascular Diseases |
| 5 | Body Mass Index |
| 5 | Antibodies, Neutralizing |
| 5 | Analysis of Variance |
| 5 | Adenine |
| 5 | Activities of Daily Living |
| 4 | nef Gene Products, Human Immunodeficiency Virus |
| 4 | Zidovudine |
| 4 | World Health Organization |
| 4 | Women |
| 4 | Urban Health |
| 4 | Tuberculosis, Multidrug-Resistant |
| 4 | Transients and Migrants |
| 4 | Swaziland |
| 4 | Statistics, Nonparametric |
| 4 | Social Responsibility |
| 4 | Social Class |
| 4 | Social Change |
| 4 | Social Behavior |
| 4 | Self Report |
| 4 | Rural Health Services |
| 4 | Public Health Surveillance |
| 4 | Psychometrics |
| 4 | Preventive Health Services |
| 4 | Predictive Value of Tests |
| 4 | Pre-Eclampsia |
| 4 | Poverty Areas |
| 4 | Postpartum Period |
| 4 | Pneumonia, Pneumocystis |
| 4 | Physician-Patient Relations |
| 4 | Parent-Child Relations |
| 4 | Papillomavirus Infections |
| 4 | Neuropsychological Tests |
| 4 | National Health Programs |
| 4 | Mouth Neoplasms |
| 4 | Molecular Sequence Data |
| 4 | Models, Theoretical |
| 4 | Models, Statistical |
| 4 | Marital Status |
| 4 | Malnutrition |
| 4 | Malawi |
| 4 | Lymphoma, AIDS-Related |
| 4 | Lesotho |
| 4 | Kenya |
| 4 | Informed Consent |
| 4 | Information Dissemination |
| 4 | Human Rights |
| 4 | Hospitals, Public |
| 4 | History, 20th Century |
| 4 | Herpesvirus 8, Human |
| 4 | Health Resources |
| 4 | Health Priorities |
| 4 | Haplotypes |
| 4 | Genetic Vectors |
| 4 | Friends |
| 4 | Financing, Organized |
| 4 | Faculty |
| 4 | Extensively Drug-Resistant Tuberculosis |
| 4 | Employment |
| 4 | Drug Monitoring |
| 4 | Drug Interactions |
| 4 | Domestic Violence |
| 4 | Disease Management |
| 4 | Disabled Persons |
| 4 | Disability Evaluation |
| 4 | Diet |
| 4 | Dideoxynucleosides |
| 4 | Diagnostic Tests, Routine |
| 4 | Diabetes Mellitus |
| 4 | Cytomegalovirus Infections |
| 4 | Continuity of Patient Care |
| 4 | Communicable Diseases |
| 4 | Child Development |
| 4 | Cell Line |
| 4 | CD8-Positive T-Lymphocytes |
| 4 | Biopsy |
| 4 | Bayes Theorem |
| 4 | Anxiety |
| 4 | Anxiety Disorders |
| 4 | Antibodies, Viral |
| 4 | Aging |
| 4 | Administration, Intravaginal |
| 4 | AIDS-Associated Nephropathy |
| 3 | pol Gene Products, Human Immunodeficiency Virus |
| 3 | Volunteers |
| 3 | Universities |
| 3 | Unemployment |
| 3 | Tumor Necrosis Factor-alpha |
| 3 | Travel |
| 3 | Topography, Medical |
| 3 | T-Lymphocytes |
| 3 | Survival Rate |
| 3 | Suicidal Ideation |
| 3 | Substance Abuse, Intravenous |
| 3 | Student Dropouts |
| 3 | Stress Disorders, Post-Traumatic |
| 3 | Spatial Analysis |
| 3 | Social Justice |
| 3 | Sex Workers |
| 3 | Seroepidemiologic Studies |
| 3 | Self Disclosure |
| 3 | Self Concept |
| 3 | Secondary Prevention |
| 3 | Rwanda |
| 3 | Resource Allocation |
| 3 | Resilience, Psychological |
| 3 | Research Personnel |
| 3 | Religion |
| 3 | Recurrence |
| 3 | Rats |
| 3 | Rats, Wistar |
| 3 | Quality Improvement |
| 3 | Public Policy |
| 3 | Public Health Administration |
| 3 | Professional Role |
| 3 | Problem Solving |
| 3 | Primary Prevention |
| 3 | Prenatal Exposure Delayed Effects |
| 3 | Pregnancy Outcome |
| 3 | Pregnancy Complications |
| 3 | Pneumonia, Bacterial |
| 3 | Plants, Medicinal |
| 3 | Plant Preparations |
| 3 | Placebos |
| 3 | Patient Selection |
| 3 | Palliative Care |
| 3 | Pain Management |
| 3 | Nurses |
| 3 | Medicine, Traditional |
| 3 | Maternal Age |
| 3 | Masculinity |
| 3 | Malaria |
| 3 | Lymphoma, B-Cell |
| 3 | Lipopolysaccharides |
| 3 | Killer Cells, Natural |
| 3 | Kaplan-Meier Estimate |
| 3 | Interview, Psychological |
| 3 | Interleukin-2 |
| 3 | Interferon-gamma |
| 3 | India |
| 3 | Immunocompromised Host |
| 3 | Hospitals, University |
| 3 | Herpesviridae Infections |
| 3 | HIV Seronegativity |
| 3 | HIV Reverse Transcriptase |
| 3 | Glomerular Filtration Rate |
| 3 | Genotyping Techniques |
| 3 | Gene Expression Regulation |
| 3 | Flow Cytometry |
| 3 | Feces |
| 3 | Feasibility Studies |
| 3 | Family Planning Services |
| 3 | Epitopes |
| 3 | Epidemiological Monitoring |
| 3 | Emtricitabine |
| 3 | Emotions |
| 3 | Early Detection of Cancer |
| 3 | Double-Blind Method |
| 3 | Discrimination (Psychology) |
| 3 | Diabetes Mellitus, Type 2 |
| 3 | Delivery, Obstetric |
| 3 | Databases, Factual |
| 3 | Cultural Characteristics |
| 3 | Cross-Cultural Comparison |
| 3 | Cooperative Behavior |
| 3 | Confidence Intervals |
| 3 | Comprehension |
| 3 | Cognitive Therapy |
| 3 | Cognition |
| 3 | Cognition Disorders |
| 3 | Cities |
| 3 | Chromatography, Liquid |
| 3 | Choice Behavior |
| 3 | Child Mortality |
| 3 | Cerebrospinal Fluid |
| 3 | Cell Phones |
| 3 | Cameroon |
| 3 | Botswana |
| 3 | Body Weight |
| 3 | B-Lymphocytes |
| 3 | Awareness |
| 3 | Autopsy |
| 3 | Australia |
| 3 | Antigens, Fungal |
| 3 | Antigens, CD4 |
| 3 | Antifungal Agents |
| 3 | Alleles |
| 3 | Adolescent Health Services |
| 3 | Administration, Rectal |
| 3 | Acute Disease |
| 2 | Workplace |
| 2 | Women's Rights |
| 2 | Virus Diseases |
| 2 | Virulence |
| 2 | Violence |
| 2 | Vaginal Creams, Foams, and Jellies |
| 2 | Vaccination |
| 2 | United Nations |
| 2 | Tuberculosis, Meningeal |
| 2 | Transportation |
| 2 | Translating |
| 2 | Transition to Adult Care |
| 2 | Transgenes |
| 2 | Toll-Like Receptor 8 |
| 2 | Tissue Donors |
| 2 | Thailand |
| 2 | Temperature |
