Sexual risk factors for HIV infection in early and advanced HIV epidemics in sub-Saharan Africa: Systematic overview of 68 epidemiological studies

PLoS ONE

Volumn 2, Issue 10, 2007, Pages

  Chen, Li ^a   Jha, Prabhat ^a   Stirling, Bridget ^a,b   Sgaier, Sema K ^a   Daid, Tina ^a   Kaul, Rupert ^c,d   Nagelkerke, Nico ^e  

^a ST MICHAEL'S HOSPITAL   (Canada)

^b UNIVERSITY OF VICTORIA   (Canada)

^c UNIVERSITY OF NAIROBI   (Kenya)

^d UNIVERSITY HEALTH NETWORK   (Canada)

^e AL AIN UNIVERSITY   (United Arab Emirates)

Author keywords

[No Author keywords available]

Indexed keywords

AFRICA; EPIDEMIC; EPIDEMIOLOGICAL DATA; GENDER BIAS; HERPES SIMPLEX; HERPES SIMPLEX VIRUS 2; HIGH RISK POPULATION; HUMAN; HUMAN IMMUNODEFICIENCY VIRUS INFECTION; INFECTION RISK; PREVALENCE; PROSTITUTION; PUBLISHING; REVIEW; RISK ASSESSMENT; RISK REDUCTION; SEXUAL BEHAVIOR; SEXUALLY TRANSMITTED DISEASE; SYSTEMATIC REVIEW; TIME; VIRUS TRANSMISSION; AFRICA SOUTH OF THE SAHARA; ARTICLE; FEMALE; MALE; META ANALYSIS; RISK; RISK FACTOR; SEXUALITY;

HUMAN HERPESVIRUS 2; SIMPLEXVIRUS;

AFRICA SOUTH OF THE SAHARA; FEMALE; HIV INFECTIONS; HIV SEROPOSITIVITY; HUMANS; MALE; ODDS RATIO; PREVALENCE; PROSTITUTION; RISK FACTORS; SEXUAL BEHAVIOR; SEXUAL PARTNERS; SEXUALLY TRANSMITTED DISEASES; TIME FACTORS;

EID: 37349003787     PISSN: None     EISSN: 19326203     Source Type: Journal    
DOI: 10.1371/journal.pone.0001001     Document Type: Review

References (130)

1. UNAIDS (2006) AIDS Epidemic Update. Geneva: WHO/UNAIDS.
2. Cote AM, Sobela F, Dzokoto A, Nzambi K, Samoah-Adu C, et al. (2004) Transactional sex is the driving force in the dynamics of HIV in Accra, Ghana. AIDS 18: 917-25.
3. Cohen MS, Hoffman IF, Royce RA, Kazembe P, Dyer JR, et al. (1997) Reduction of concentration of HIV-1 in semen after treatment of urethritis: implications for prevention of sexual transmission of HIV-1. AIDSCAP Malawi Research Group. Lancet 349: 1868-73.
4. Freeman EE, Weiss HA, Glynn JR, Cross PL, Whitworth JA, et al. (2006) Herpes simplex virus 2 infection increases HIV acquisition in men and women: systematic review and meta-analysis of longitudinal studies. AIDS 20: 73-83.
5. Weiss HA, Quigley MA, Hayes RJ (2000) Male circumcision and risk of HIV infection in sub-Saharan Africa: a systematic review and meta-analysis. AIDS 14: 2361-70.
6. Siegfried N, Muller M, Deeks J, Volmink J, Egger M, et al. (2005) HIV and male circumcision a systematic review with assessment of the quality of studies. Lancet Infect Dis 5: 165-73.
7. Nagelkerke NJ, Jha P, de Vlas SJ, Korenromp EL, Moses S, et al. (2002) Modelling HIV/AIDS epidemics in Botswana and India: impact of interventions to prevent transmission. Bull World Health Organ 80: 89-96.
8. Jha P, Nagelkerke JD, Ngugi EN, Prasada Rao JV, Willbond B, et al. (2001) Reducing HIV transmission in developing countries. Science 292: 224-5.
9. Hearst N, Mandel JS (1997) A research agenda for AIDS prevention in the developing world. AIDS 11 Suppl 1: S1-S4.
10. Auvert B, Taljaard D, Lagarde E, Sobingwi-Tambekou J, Sitta R, et al. (2005) Randomized, controlled intervention trial of male circumcision for reduction of HIV infection risk: the ANRS 1265 Trial. PLoS Med 2: e298.
11. Allen S, Lindan C, Serufilira A, Van de PP, Rundle AC, et al. (1991) Human immunodeficiency virus infection in urban Rwanda. Demographic and behavioral correlates in a representative sample of childbearing women. JAMA 266: 1657-63.
12. Lindan C, Allen S, Carael M, Nsengumuremyi F, Van de PP, et al. (1991) Knowledge, attitudes, and perceived risk of AIDS among urbah Rwandan women: relationship to HIV infection and behavior change. AIDS 5: 993-1002.
13. Bassett MT, Latif AS, Katzenstein DA, Emmanuel JC (1992) Sexual behavior and risk factors for HIV infection in a group of male factory workers who donated blood in Harare, Zimbabwe. J Acquir Immune Defic Syndr 5: 556-9.
14. Berkley SF, Widy-Wirski R, Okware SI, Downing R, Linnan MJ, et al. (1989) Risk factors associated with HIV infection in Uganda. J Infect Dis 160: 22-30.
15. Miotti PG, Dallabetta G, Ndovi E, Liomba G, Saah AJ, et al. (1990) HIV-1 and pregnant women: associated factors, prevalence, estimate of incidence and role in fetal wastage in central Africa. AIDS 4: 733-6.
16. Chao A, Bulterys M, Musanganire F, Habimana P, Nawrocki P, et al. (1994) Risk factors associated with prevalent HIV-1 infection among pregnant women in Rwanda. National University of Rwanda-Johns Hopkins University AIDS Research Team. Int J Epidemiol 23: 371-80.
17. Hunter DJ, Maggwa BN, Mati JK, Tukei PM, Mbugua S (1994) Sexual behavior, sexually transmitted diseases, male circumcision and risk of HIV infection among women in Nairobi, Kenya. AIDS 8: 93-9.
18. Serwadda D, Wawer MJ, Musgrave SD, Sewankambo NK, Kaplan JE, et al. (1992) HIV risk factors in three geographic strata of rural Rakai District, Uganda. AIDS 6: 983-9.
19. Ndinya-Achola JO, Chee AE, Kihara AN, Krone MR, Plummer FA, et al. (1997) High HIV prevalence, low condom use and gender differences in sexual behaviour among patients with STD-related complaints at a Nairobi primary health care clinic. Int J STD AIDS 8: 506-14.
20. Nunn AJ, Wagner HU, Okongo JM, Malamba SS, Kengeya-Kayondo JF, et al. (1996) HIV-1 infection in a Ugandan town on the trans-African highway: prevalence and risk factors. Int J STD AIDS 7: 123-30.
21. Carpenter LM, Kamali A, Payne M, Kiwuuwa S, Kintu P, et al. (2002) Independent effects of reported sexually transmitted infections and sexual behavior on HIV-1 prevalence among adult women, men, and teenagers in rural Uganda. J Acquir Immune Defic Syndr 29: 174-80.
22. Quigley M, Munguti K, Grosskurth H, Todd J, Mosha F, et al. (1997) Sexual behaviour patterns and other risk factors for HIV infection in rural Tanzania: a case-control study. AIDS 11: 237-48.
23. Bulterys M, Chao A, Habimana P, Dushimimana A, Nawrocki P, et al. (1994) Incident HIV-1 infection in a cohort of young women in Butare, Rwanda. AIDS 8: 1585-91.
24. Siziya S, Hakim JG (1996) Differential human immunodeficiency virus risk factors among female general nurses, nurse midwives and office workers/ teachers in Zambia. Cent Afr J Med 42: 114-7.
25. Cossa HA, Gloyd S, Vaz RG, Folgosa E, Simbine E, et al. (1994) Syphilis and HIV infection among displaced pregnant women in rural Mozambique. Int J STD AIDS 5: 117-23.
26. del Mar Pujades RM, Obasi A, Mosha F, Todd J, Brown D, et al. (2002) Herpes simplex virus type 2 infection increases HIV incidence: a prospective study in rural Tanzania. AIDS 16: 451-62.
27. Todd J, Grosskurth H, Changalucha J, Obasi A, Mosha F, et al. (2006) Risk factors influencing HIV infection incidence in a rural African population: a nested case-control study. J Infect Dis 193: 458-66.
28. Kapiga SH, Lyamuya EF, Lwihula GK, Hunter DJ (1998) The incidence of HIV infection among women using family planning methods in Dar es Salaam, Tanzania. AIDS 12: 75-84.
29. Quigley MA, Morgan D, Malamba SS, Mayanja B, Okongo MJ, et al. (2000) Case-control study of risk factors for incident HIV infection in rural Uganda. J Acquir Immune Defic Syndr 23: 418-25.
30. Bassett MT, McFarland WC, Ray S, Mbizvo MT, Machekano, R, et al. (1996) Risk factors for HIV infection at enrollment in an urban male factory cohort in Harare, Zimbabwe. J Acquir Immune Defic Syndr Hum Retrovirol 13: 287-93.
31. Kelly R, Kiwanuka N, Wawer MJ, Serwadda D, Sewankambo NK, et al. (1999) Age of male circumcision and risk of prevalent HIV infection in rural Uganda. AIDS 13: 399-405.
32. Mbizvo MT, Mashu A, Chipato T, Makura E, Bopoto R, et al. (1996) Trends in HIV-1 and HIV-2 prevalence and risk factors in pregnant women in Harare, Zimbabwe. Cent Afr J Med 42: 14-21.
33. Aseffa A, Ishak A, Stevens R, Fergussen E, Giles M, et al. (1998) Prevalence of HIV, syphilis and genital chlamydial infection among womem in north-west Ethiopia. Epidemiol Infect 120: 171-7.
34. McFarland W, Gwanzura L, Bassett MT, Machekano R, Latif AS, et al. (1999) Prevalence and incidence of herpes simplex vuus type 2 infection among male Zimbabwean factory workers. J Infect Dis 180: 1459-65.
35. Tengia-Kessy A, Msamanga GI, Moshiro CS (1998) Assessment of behavioural risk factors associated with HIV infection among youth in Moshi rural district, Tanzania. East Afr Med J 75: 528-32.
36. Kapiga SH, Shao JF, Lwihula GK, Hunter DJ (1994) Risk factors for HIV infection among women in Dar-es-Salaam, Tanzania. J Acquir Immune Defic Syndr 7: 301-9.
37. Hargreaves JR (2002) Socioeconomic status and risk of HIV infection in an urban population in Kenya. Trop Med Int Health 7: 793-802.
38. Mihret W, Rinke de Wit TF, Petros B, Mekonnen Y, Tsegaye A, et al. (2002) Herpes simplex virus type 2 seropositivity among urban adults in Africa: results from two cross-sectional surveys in Addis Ababa, Ethiopia. Sex Transm Dis 29: 175-81.
39. Kumwenda NI, Taha TE, Hoover DR, Markakis D, Liomba GN, et al. (2002) Three surveys of HIV-1 prevalence and risk factors among men working at a sugar estate in Malawi. Sex Transm Dis 29: 366-71.
40. Lagarde E, Schim van der LM, Enel C, Holmgren B, Dray-Spira R, et al. (2003) Mobility and the spread of human immunodeficiency virus into rural areas of West Africa. Int J Epidemiol 32: 744-52.
41. Mbopi-Keou FX, Gresenguet G, Mayaud P, Weiss HA, Gopal R, et al. (1999) Genital herpes simplex virus type 2 shedding is increased in HIV-Infected women in Africa. AIDS 13: 536-7.
42. Sutcliffe S, Taha TE, Kumwenda NI, Taylor E, Liomba GN (2002) HIV-1 prevalence and herpes simplex virus 2, hepatitis C virus, and hepatitis B virus infections among male workers at a sugar estate in Malawi. J Acquir Immune Defic Syndr 31: 90-7.
43. Auvert B, Ballard R, Campbell C, Carael M, Carton M, et al. (2001) HIV infection among youth in a South African mining town is associated with herpes simplex virus-2 seropositivity and sexual behaviour. AIDS 15: 885-98.
44. Coffee MP, Garnett GP, Mlilo M, Vocten HA, Chandiwana S. et al. (2005) Patterns of movement and risk of HIV infection in rural Zimbabwe. J Infect Dis 191 Suppl 1: S159-S167.
45. Lurie MN, Williams BG, Zuma K, Mkaya-Mwamburi D, Garnett G, et al. (2003) The impact of migration on HIV-1 transmission in South Africa: a study of migrant and nonmigrant men and thier partners. Sex Transm Dis 30: 149-56.
46. Msuya SE, Mbizvo E, Stray-Pedersen B. Sundby J, Sam NE et al. (2002) Reproductive tract infections and the risk of HIV among women in Moshi, Tanzania. Acta Obstet Gynecol Scand 81; 886-93.
47. Mbizvo EM, Msuya SE, Stray-Pedersen B, Sundby J, Chirenje MZ, et al. (2001) HIV seroprevalence and its associations with the other reproductive tract infections in asymptomatic women in Harare, Zimbabwe. Int J STD AIDS 12: 524-31.
48. Mbizvo EM, Msuya SE, Stray-Pedersen B, Chirenje MZ, Munjoma M, et al. (2002) Association of herpes simplex virus type 2 with the human immunodeficiency virus among urban women in Zimbabwe. Int J STD AIDS 13: 343-8.
49. Cowan FM, Langhaug LF, Hargrove JW, Jaffar S, Mhuriyengwe L, et al. (2005) Is sexual contact with sex workers important in driving the HIV epidemic among men in rural Zimbabwe? J Acquir Immune Defic Syndr 40: 371-6.
50. Lagande E, Congo Z, Meda N, Baya B, Yaro S, et al. (2004) Epidemiology of HIV infection in urban Burkina Faso. Int J STD AIDS 15: 395-402.
51. Nyambi P, Zekeng L, Kenfack H, Tongo M, Nanfack A et al. (2002) HIV infection in rural villages of Cameroon. J Acquir Immune Defic Syndr 31: 506-13.
52. Clift S, Anemona A, Watson-Jones D, Kanga Z, Ndcki L, et al. (2003) Variations of HIV and STI prevalences within communities neighbouring new goldmines in Tanzania: importance for intervention design. Sex Transm Infect 79: 307-12.
53. Pettifor AE, van der SA, Dunbar MS, Shiboski SC, Padian NS (2004) Early age of first sex: a risk factor for HIV infection among women in Zimbabwe. AIDS 18: 1435-42.
54. Stringer EM, Sinkala M, Kumwenda R, Chapman V, Mwale A, et al (2004) Personal risk perception, HIV knowledge and risk avoidance behavior, and their relationships to actual HIV serostatus in an urban African obstetric population. J Acquir Immune Defic Syndr 35: 60-6.
55. Sagay AS, Kapiga SH, Imade GE, Sankale JL, Idoko J, et al. (2005) HIV infection among pregnant women in Nigeria. Int J Gynaecol Obstet 90: 61-7.
56. Zuma K, Gouws E, Williams B, Lurie M (2003) Risk factors for HIV infection among women in Carletonville, South Africa: migration, demography and sexually transmitted diseases. Int J STD AIDS 14: 814-7.
57. Barongo LR, Borgdorff MW, Mosha FF, Nicoll A, Grosskurth H, et al. (1992) The epidemiology of HIV-1 infection in urban areas, roadside settlements and rural villages in Mwanza Region, Tanzania. AIDS 6: 1521-8.
58. Kelly RJ, Gray RH, Sewankambo NK, Serwadda D, Wabwire-Mangen F, et al. (2003) Age differences in sexual partners and risk of HIV-1 infection in rural Uganda. J Acquir Immune Defic-Syndr 32: 446-51.
59. Mnyika KS, Klepp KI, Kvale G, Ole-King'ori N (1996) Risk factors for HIV-1 infection among women in the Arusha region of Tanzania. J Acquir Immune Defic Syndr Hum Retrovirol 11: 484-91.
60. Simonsen JN, Cameron DW, Gakinya MN, Ndinya-Achola JO, D'Costa LJ, et al. (1988) Human immunodeficiency virus infection among men with sexually transmitted diseases. Experience from a center in Africa. N Engl J Med 319: 274-8.
61. Nsubuga P, Mugerwa R, Nsibambi J, Sewnkambo N, Katabira E, et al. (1990) The association of genital ulcer disease and HIV infection at a dermatology- STD clinic in Uganda. J Acquir Immune Defic Syndr 3: 1002-5.
62. Nzila N, Laga M, Thiam MA, Mayimona K, Edidi B, et al. (1991) HIV and other sexually transmitted diseases among female prostitutes in Kinshasa. AIDS 5: 715-21.
63. Plourde PJ, Plummer FA, Pepin J, Agoki E, Muss G, et al. (1992) Human immunodeficiency virus type 1 infection in women attending a sexually transmitted diseases clinic in Kenya. J Infect Dis 166: 86-92.
64. Seed J, Allen S, Meltens T, Hudes E, Serufilira A, et al. (1995) Male circumcision, sexually transmitted disease, and risk of HIV. J Acquir Immune Defic Syndr Hum Retrovirol 8: 83-90.
65. Diallo MO, Ackah AN, Lafontaine MF, Doorly R, Roux R, et al. (1992) HIV-1 and HIV-2 infections in men attending sexually transmitted disease clinics in Abidjan, Cote d'Ivoire. AIDS 6: 581-5.
66. Bwayo J, Plummer F, Omari M, Mutere A, Moses S, et al. (1994) Human immunodeficiency virus infection in long-distance truck drivers in east Africa. Arch Intern Med 154: 1391-6.
67. Sassan-Morokro M, Greenberg AE, Coulibaly IM, Coulibaly D, Sidibe K, et al. (1996) High rates of sexual contact with female sex workers, sexually transmitted diseases, and condom neglect among HIV-infected and uninfected men with tuberculosis in Abidjan, Cote d'Ivoire. J Acquir Immune Defic Syndr Hum Retrovirol 11: 183-7.
68. Marcelin AG, Grandadam M, Flandre P, Nicand E, Milliancourt C, et al. (2002). Kaposi's sarcoma herpesvirus and HIV-1 seroprevalences in prostitutes in Djibouti. J Med Virol 68: 164-7.
69. Langeland N, Haarr L, Mhalu F (1998) Prevalence of HSV-2 antibodies among STD clinic patients in Tanzania. Int J STD AIDS 9: 104-7.
70. Meda N, Ledru S, Fofana M, Lankoande S, Soula G, et al. (1995) Sexually transmitted diseases and human immunodeficiency virus infection among women with genital infections in Burkina Faso. Int J STD AIDS 6: 273-7.
71. Chen CY, Ballard RC, Beck-Sague CM, Dangor Y, Radebe F, et al. (2000) Human immunodeficiency virus infection and genital ulcer disease in South Africa: the herpetic connection. Sex Transm Dis 27: 21-9.
72. MacDonald KS, Malonza I, Chen DK, Nagelkerke NJ, Nasio JM, et al. (2001) Vitamin A and risk of HIV-1 seroconversion among Kenyan men with genital ulcers. AIDS 15: 635-9.
73. Mbopi-Keou FX, Gresenguet G, Mayaud P, Weiss HA, Gopal R, et al. (2000) Interactions between herpes simplex virus type 2 and human immunodeficiency virus type 1 infection in African women: opportunities for intervention. J Infect Dis 182: 1090-6.
74. Kapiga SH, Sam NE, Shao JF, Renjifo B, Masenga EJ, et al. (2002) HIV-1 epidemic among female bar and hotel workers in northern Tanzania: risk factors and opportunities for prevention. J Acquir Immune Defic Syndr 29: 409-17.
75. Kapiga SH, Sam NE, Shao JF, Masenga EJ, Renjifo B, et al. (2003) Herpes simplex virus type 2 infection among bar and hotel workers in northern Tanzania: prevalence and risk factors. Sex Transm Dis 30: 187-92.
76. Riedner G, Rusizoka M, Hoffmann O, Nichombe F, Lyamuya E, et al. (2003) Baseline survey of sexually transmitted infections in a cohort of female bar workers in Mbeya Region, Tanzania. Sex Transm Infect 79: 382-7.
77. Ao TT, Sam NE, Masenga EJ, Seage GR III, Kapiga SH (2006) Human immunodeficiency virus type 1 among bar and hotel workers in northern Tanzania: the role of alcohol, sexual behavior, and herpes simplex virus type 2. Sex Transm Dis 33: 163-9.
78. ter Meulen J, Mgaya HN, Chang-Claude J, Luande J, Mtiro H, et al. (1992) Risk factors for HIV infection in gynaecological inpatients in Dar es Salaam, Tanzania, 1988-1990. East Afr Med J 69: 688-92.
79. Maggwa BN, Hunter DJ, Mbugua S, Tukei P, Mati JK (1993) The relationship between HIV infection and cervical intraepithelial neoplasia among women attending two family planning clinics in Nairobi, Kenya. AIDS 7: 733-8.
80. Taha TE, Hoover DR, Dallabetta GA, Kumwenda NI, Mtimavalye LA, et al. (1998) Bacterial vaginosis and disturbances of vaginal flora: association with increased acquisition of HIV. AIDS 12: 1699-706.
81. Smith J, Nalagoda F, Wawer MJ, Serwadda D, Sewankambo N, et al. (1999) Education attainment as a predictor of HIV risk in rural Uganda: results from a population-based study. Int J STD AIDS 10: 452-9.
82. Zaha BW, Carpenter LM, Boerma JT, Gregson S, Nakiyingi J, et al. (2000) Adjusting ante-natal clinic data for improved estimates of HIV prevalence among women in sub-Saharan Africa. AIDS 14: 2741-50.
83. Kapiga SH, Lyamuya EF, Vuylsteke B, Spiegelman D, Larsen U, et al. (2000) Risk factors for HIV-1 seroprevalence among family planning clients in Dar es Salaam, Tanzania. Afr J Reprod Health 4: 88-99.
84. Boerma JT, Gregson S, Nyamukapa C, Urassa M (2003) Understanding the uneven spread of HIV within Africa: comparative study of biologic, behavioral, and contextual factors in rural populations in Tanzania and Zimbabwe. Sex Transm Dis 30: 779-87.
85. Gwanzura L, McFarland W, Alexander D, Burke RL, Katzenstein D (1998) Association between human immunodeficiency virus and herpes simplex virus type 2 seropositivity among male factory workers in Zimbabwe. J Infect Dis 177: 481-4.
86. Simooya OO, Sanjobo NE, Kaetano L, Sijumbila G, Munkonze FH, et al. (2001) 'Behind walls': a study of HIV risk behaviours and seroprevalence in prisons in Zambia. AIDS 15: 1741-4.
87. Leroy V, De CA, Ladner J, Bogaerts J, Van de PP, et al. (1995) Should screening of genital infections be part of antenatal care in areas of high HIV prevalence? A prospective cohort study from Kigali, Rwanda, 1992-1993. The Pregnancy and HIV (EGE) Group. Genitourin Med 71: 207-11.
88. Petry KU, Kingu H (1996) HIV infection among pregnant women in Lindi, Tanzania, 1989-1993. Int J STD AIDS 7: 265-8.
89. Msuya SE, Mbizvo E, Hussain A, Sam NE, Jeansson S, et al. (2003) Seroprevalence and correlates of herpes simplex virus type 2 among urban Tanzanian women. Sex Transm Dis 30: 588-92.
90. Van de PP, Carael M, Nzaramba D, Zissis G, Kayihigi J, et al. (1987) Risk factors for HIV seropositivity in selected urban-based Rwandese adults. AIDS 1: 207-11.
91. Hira SK, Kamanga J, Macuacua B, Mwansa N, Cruess DF, et al. (1990) Genital ulcers and male circumcision as risk factors for acquiring HIV-1 in Zambia. J Infect Dis 161: 584-5.
92. Grosskurth H, Mosha F, Todd J, Senkoro Y, Newell J, et al. (1995) A community trial of the impact of improved sexually transmitted disease treatment on the HIV epidemic in rural Tanzania: 2. Baseline survey results. AIDS 9: 927-34.
93. Urassa M, Todd J, Boerma JT, Hayes R, Isingo R (1997) Male circumcision and susceptibility to HIV infection among men in Tanzania. AIDS 11: 73-80.
94. Sentjens RE, Sisay Y, Vrielink H, Kebede D, Ader HJ, et al. (2002) Prevalence of and risk factors for HIV infection in blood donors and various population subgroups in Ethiopi. Epidemiol Infect 128: 221-8.
95. Carswell JW, Lloyd G, Howells J (1989) Prevalence of HIV-1 in east African lorry drivers. AIDS 3: 759-61.
96. Thior I, Diouf G, Diaw IK, Sarr AD, Hsieh CC, et al. (1997) Sexually transmitted diseases and risk of HIV infection in men attending a sexually transmitted diseases clinic in Dakar, Senegal. Afr J Reprod Health 1: 26-35.
97. Lankoande S, Meda N, Sangare L, Compaore IP, Catraye J, et al. (1998) Prevalence and risk of HIV infection among female sex workers in Burkina Faso. Int J STD AIDS 9: 146-50.
98. Mann JM, Nzilambi N, Piot P, Bosenge N, Kalala M, et al. (1988) HIV infection and associated risk factors in female prostitutes in Kinshasa, Zaire. AIDS 2: 249-54.
99. Ramjee G, Williams B, Gouws E, Van DE, De DB, et al. (2005) The impact of incident and prevalent herpes simplex virus-2 infection on the incidence of HIV-1 infection among commercial sex workers in South Africa. J Acquir Immune Defic Syndr 39: 333-9.
100. Nagot N, Ouedraogo A, Ouangre A, Cartoux M, Defer MC, et al. (2005) Is sexually transmitted infection management among sex workers still able to mitigate the spread of HIV infection in West Africa? J Acquir Immune Defic Syndr 39: 454-8.
101. Bogaerts J, Kestens L, Van DE, Tello WM, Akingeneye J, et al. (1998) Genital ulcers in a primary health clinic in Rwanda: impact of HIV infection on diagnosis and ulcer healing (1986-1992). Int J STD AIDS 9: 706-10.
102. Bwayo JJ, Omari AM, Mũtere AN, Jaoko W, Sekkade-Kigondu C, et al. (1991) Long distance truck-drivers: 1. Prevalence of sexually transmitted diseases (STDs). East Afr Med J 68: 425-9.
103. Carael M, Van de Perre PH, Lepage PH, Allen S, Nsengumuremyi F, et al. (1988) Human immunodeficiency virus transmission among heterosexual couples in Central Africa. AIDS 2: 201-5.
104. Ryder RW, Ndilu M, Hassig SE, Kamenga M, Sequeira D, et al. (1990) Heterosexual transmission of HIV-1 among employees and their spouses at two large businesses in Zaire. AIDS 4: 725-32.
105. Lurie MN, Williams BG, Zuma K, Mkaya-Mwamburi D, Garnett GP, et al. (2003) Who infects whom? HIV-1 concordance and discordance among migrant and non-migrant couples in South Africa. AIDS 17: 2245-52.
106. Hudson CP, Hennis AJ, Kataaha P, Lloyd G, Moore AT, et al. (1988) Risk factors for the spread of AIDS in rural Africa: evidence from a comparative seroepidemiological survey of AIDS, hepatitis B and syphilis in southwestern Uganda. AIDS 2: 255-60.
107. Greenblatt RM, Lukehart SA, Plummer FA, Quinn TC, Critchlow CW, et al. (1988) Genital ulceration as a risk factor for human immunodeficiency virus infection. AIDS 2: 47-50.
108. McCarthy MC, Hyams KC, el-Tigani el-Hag A, el-Dabi MA, el-Sadig el-Tayeb M, et al. (1989) HIV-1 and hepatitis B transmission in Sudan. AIDS 3: 725-9.
109. Pison G, Le GB, Lagarde E, Enel C, Seck C (1993)-Seasonal migration: a risk factor for HIV infection in rural Senegal. J Acquir Immune Defic Syndr 6: 196-200.
110. McCarthy MC, Khalid IO, El TA (1995) HIV-1 infection in Juba, southern Sudan. J Med Virol 46: 18-20.
111. Sinei SK, Fortney JA, Kigondu CS, Feldblum PJ, Kuyoh M, et al. (1996) Contraceptive use and HIV infection in Kenyan family planning clinic attenders. Int J STD AIDS 7: 65-70.
112. Gomo E, Chibatamoto PP, Chandiwana SK, Sabeta CT (1997) Risk factors for HIV infection in a rural cohort in Zimbabwe: a pilot study. Cent Afr J Med 43: 350-4.
113. Obisesan KA, Olaleye OD, Adeyemo AA (1997) The increasing prevalence of HIV-1 and HIV-2 infections in a low-risk antenatal population in south west Nigeria. Int J Gynaecol Obstet 56: 271-3.
114. WHO/UNAIDS (2002) HIV Simple/Rapid Assays: Operational Characteristics, Report 13. Geneva.
115. Sutton AJ (2000) Methods for Meta-analysis in Medical Research. New York: John Wiley.
116. Seber GAF, Lee AJ (2003) Linear Regression Analysis. 2nd ed. Hoboken, NJ: John Wiley.
117. Breslow NE, Day NE (1980) Statistical Methods in Cancer Research. Vol I: The Analysis of Case-Control Studies. IARC Sci Publ No 32. Lyon: International Agency for Research oh Cancer.
118. Egger M, Smith GD, Altman DG (2001) Systematic reviews in health care: meta-analysis in context. 2nd ed. London: BMJ.
119. Wellings K, Collumbien M, Slaymaker E, Singh S, Hodges Z, et al. (2006) Sexual behaviour in context: a global perspective. Lancet 368: 1706-28.
120. Cleland J, Boerma JT, Carael M, Weir SS (2004) Monitoring sexual behaviour in general populations: a synthesis of lessons of the past decade. Sex Transm Infect 80 Suppl 2: ii1-ii7.
121. Alary M, Mukenge-Tshibaka L, Bernier F, Geraldo N, Lowndes CM, et al. (2002) Decline in the prevalence of HIV and sexually transmitted diseases among female sex workers in Cotonou, Benin, 1993-1999. AIDS 16: 463-70.
122. Samoah-Adu C, Khonde N, Avorkliah M, Bekoe V, Alary M, et al. (2001) HIV infection among sex workers in Accra: need to target new recruits entering the trade. J Acquir Immune Defic Syndr 28: 358-66.
123. UNAIDS (2005) AIDS Epidemic Update: Special Section on HIV Prevention. Geneva: WHO/UNAIDS.
124. Wawer MJ, Gray R, Serwadda D, Namukwaya Z, Makumbi F, et al.. (2005) Declines in HIV prevalence in Uganda: not as simple as ABC. Twelfth conference on retroviruses and opportunistic infections, Boston: No 27LB.
125. Kaul R, Kimani J, Nagelkerke NJ, Fonck K, Ngugi EN, et al. (2004) Monthly antibiotic chemoprophylaxis and incidence of sexually transmitted infections and HIV-1 infection in Kenyan sex workers: a randomized controlled trial. JAMA 291: 2555-62.
126. Stroup DF, Berlin JA, Morton SC, Olkin I, Williamson GD, et al. (2000) Meta-analysis of observational studies in epidemiology: a proposal for reporting. Meta-analysis Of Observational Studies in Epidemiology (MOOSE) group. JAMA 283: 2008-12.
127. Egger M, Davey-Smith G (1998) Meta-analysis: Bias in location and selection of studies. BMJ 316: 61-6.
128. Siegfried N, Clarke M, Volmink J (2005) Randomised controlled trials in Africa of HIV and AIDS: descriptive study and spatial distribution. BMJ 331: 742.
129. Korenromp EL, de Vlass SJ, Nagelkerke NJ, Habbema JD (2001) Estimating the magnitude of STD cofactor effects on HIV transmission: how well can it be done? Sex Transm Dis. 28: 613-21.
130. WHO/UNAIDS. Consultation on STI interventions for preventing HIV: appraisal of the evidence Geneva: World Organization and Joint United Nations Programme on HIV/AIDS, In press. Available: http://data.unaids.org/Publications/RC-pub01/JC300-ConsultSTD_en.pdf. Accessed 2006 Feb 23.