Showing posts with label circumcision. Show all posts
Showing posts with label circumcision. Show all posts

Thursday, April 7, 2016

Women’s Perceptions and Misperceptions of Male Circumcision: A Mixed Methods Study in Zambia

Women’s perceptions of male circumcision (MC) have implications for behavioral risk compensation, demand, and the impact of MC programs on women’s health. This mixed methods study combines data from the first two rounds of a longitudinal study (n = 934) and in-depth interviews with a subsample of respondents (n = 45) between rounds. Most women correctly reported that MC reduces men’s risk of HIV (64% R1, 82% R2). However, 30% of women at R1, and significantly more (41%) at R2, incorrectly believed MC is fully protective for men against HIV. Women also greatly overestimated the protection MC offers against STIs. The proportion of women who believed MC reduces a woman’s HIV risk if she has sex with a man who is circumcised increased significantly (50% to 70%). Qualitative data elaborate women’s misperception regarding MC. Programs should address women’s informational needs and continue to emphasize that condoms remain critical, regardless of male partner’s circumcision status…

Women potentially contribute substantially to MC uptake by playing an active role in their partner’s decision to obtain MC, assenting when their partner indicates an interest in circumcision, or participating in the decision about circumcising a son. They may also act as supportive partners in seeking MC services or in the post-operative period. Finally, women’s accurate knowledge of the protection MC does and does not afford is important to avoid risk compensation.

With respect to basic MC awareness and knowledge, some of our findings are encouraging. At baseline, during the very early periods of the VMMC program in Zambia, three-quarters of women had heard about MC and 64.0% of women correctly indicated that MC reduces males’ risk of HIV, increasing to 81.5% in Round 2. Similar proportions accurately responded that MC provides protection against some STIs.

However, women demonstrated a lack of more nuanced knowledge of MC’s protective effects, which is cause for concern. A strikingly large proportion of women in the quantitative survey incorrectly believed that MC fully protects men from HIV. The fact that this proportion significantly increased over time is particularly troubling. Moreover, this misperception is mirrored in the qualitative subsample, with close to half of the women not understanding that MC provides only partial protection for men. Even among those women in the subsample who had responded correctly in the quantitative survey, almost half expressed uncertainty or significant misperceptions about MC’s protective effect for men against HIV in their in-depth interviews.

We observe a similar pattern regarding women’s perception of the impact of MC on STI risk for men. Although the majority of survey respondents correctly replied that MC reduces men’s risk of some STIs, the qualitative data suggest that considerable misconceptions remain. Indeed, two-thirds of women in the qualitative subsample had misperceptions about the reduction in STI risk among men that is attributable to MC. The vast majority of these women mistakenly believed that MC completely, or almost completely, protects men against STIs. Thus, our findings indicate that even in cases where superficial knowledge is demonstrated, substantial confusion exists over the relationship between MC and men’s HIV/STI acquisition, and the degree of protection afforded. This is true even among our relatively more educated and wealthier qualitative subsample.

Full article at:   http://goo.gl/JgiHoa

Philip Anglewicz, Editor
1Population Council, New York, United States of America
2London School of Hygiene and Tropical Medicine, London, United Kingdom
3Population Council, Lusaka, Zambia
4Population Council, Washington DC, United States of America
Tulane University School of Public Health, UNITED STATES




Wednesday, March 23, 2016

Post-Coital Penile Washing & The Risk of HIV-Acquisition in Uncircumcised Men, in Rakai, Uganda

Post-coital genital washing by uncircumcised men may affect the risk of male HIV acquisition. We assessed the association between self-reported washing after sex in 2,976 initially HIV-negative, uncircumcised men enrolled in a prospective cohort study in Rakai, Uganda. 

Data from the 2,976 participants who reported sexual intercourse in the past 12 months contributed 4,290 visits, with 7316.6 person-years (py) of observation during the two-year follow-up. The overall HIV-incidence was 1.28/100py 95%CI (1.04-1.57). About 91.0% of men reported washing their penis after sex, and their HIV incidence was 1.34/100py (95%CI 1.08-1.66), compared to an incidence of 0.62 /100py (95%CI 0.17-1.60) in men who did not wash their penis after intercourse. 

Using Poisson multivariable regression, the adjusted incidence rate ratio (AdjIRR) of HIV acquisition associated with post-coital washing was 1.94(95%CI 0.71-5.29). Post-coital penile washing, as practiced in this rural African population does not afford protection from HIV acquisition among uncircumcised men, and may increase risk.

Purchase full article at:   http://goo.gl/BtC812

  • 1Makerere University, School of Public Health, College of Health Sciences, Kampala, Uganda 
  • b Rakai Health Sciences Program, Entebbe, Uganda 
  • c Johns Hopkins University, Bloomberg School of Public Health, Department of Epidemiology, Baltimore, MD. 
  •  2016 Mar 17.



Tuesday, March 15, 2016

Adolescent Sexual and Reproductive Health Services and Implications for the Provision of Voluntary Medical Male Circumcision: Results of a Systematic Literature Review

Background
Voluntary medical male circumcision (VMMC) is a critical HIV prevention tool. Since 2007, sub-Saharan African countries with the highest prevalence of HIV have been mobilizing resources to make VMMC available. While implementers initially targeted adult men, demand has been highest for boys under age 18. It is important to understand how male adolescents can best be served by quality VMMC services.

Methods and Findings
A systematic literature review was performed to synthesize the evidence on best practices in adolescent health service delivery specific to males in sub-Saharan Africa. PubMed, Scopus, and JSTOR databases were searched for literature published between January 1990 and March 2014. The review revealed a general absence of health services addressing the specific needs of male adolescents, resulting in knowledge gaps that could diminish the benefits of VMMC programming for this population. Articles focused specifically on VMMC contained little information on the adolescent subgroup. The review revealed barriers to and gaps in sexual and reproductive health and VMMC service provision to adolescents, including structural factors, imposed feelings of shame, endorsement of traditional gender roles, negative interactions with providers, violations of privacy, fear of pain associated with the VMMC procedure, and a desire for elements of traditional non-medical circumcision methods to be integrated into medical procedures. Factors linked to effective adolescent-focused services included the engagement of parents and the community, an adolescent-friendly service environment, and VMMC counseling messages sufficiently understood by young males.

Conclusions
VMMC presents an opportune time for early involvement of male adolescents in HIV prevention and sexual and reproductive health programming. However, more research is needed to determine how to align VMMC services with the unique needs of this population.

Full article at:   http://goo.gl/1p24IE

1Johns Hopkins Center for Communication Programs, Baltimore, Maryland, United States of America
2Population Services International (PSI), Harare, Zimbabwe
3Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
4United Nations Children's Fund (UNICEF), New York, New York, United States of America
5Ministry of Health, Dar es Salaam, Tanzania
6Office of the U.S. Global AIDS Coordinator, U.S. Department of State, Washington, DC, United States of America
7Ministry of Health and Child Welfare, Harare, Zimbabwe
8World Health Organization (WHO), Geneva, Switzerland
9National Department of Health, Pretoria, South Africa
10United States Agency for International Development (USAID) Washington/Global Health Bureau/Office of HIV/AIDS, Washington, DC, United States of America
London School of Hygiene and Tropical Medicine, UNITED KINGDOM




Friday, March 11, 2016

"I Feel Like More of a Man": A Mixed Methods Study of Masculinity, Sexual Performance, and Circumcision for HIV Prevention

Ethnographic studies from numerous societies have documented the central role of male circumcision in conferring masculinity and preparing boys for adult male sexuality. Despite this link between masculinity, sexuality, and circumcision, there has been little research on these dynamics among men who have been circumcised for HIV prevention. 

We employed a mixed methods approach with data collected from recently circumcised men in the Dominican Republic (DR) to explore this link. We analyzed survey data collected six to 12 months post-circumcision (N = 293) as well as in-depth interviews conducted with a subsample of those men (n = 30).

We found that 42% of men felt more masculine post-circumcision. In multivariate analysis, feeling more masculine was associated with greater concern about being perceived as masculine, feeling more potent erections post-circumcision, and reporting increased ability to satisfy their partners post-circumcision. 

In qualitative interviews, these factors were all related to masculine norms of sexually satisfying one's partner, and men's experiences of circumcision were shaped by social norms of masculinity. 

This study highlights that circumcision is not simply a biomedical intervention and that circumcision programs need to incorporate considerations of masculine norms and male sexuality into their programming.

Purchase full article at:   http://goo.gl/taOEyG

  • 1 Division of Global Public Health , University of California , San Diego.
  • 2 Department of Health Behavior , Gillings School of Global Public Health, University of North Carolina at , Chapel Hill.
  • 3 Carolina Population Center , University of North Carolina at , Chapel Hill.
  • 4 Carolina Population Center and the Department of Sociology , University of North Carolina at , Chapel Hill.
  • 5 Clinica de Familia , La Romana , Dominican Republic.
  • 6 HIV Vaccine Trials Unit , Instituto Dermatológico y Cirugía de Piel , Santo Domingo , Dominican Republic.
  • 7 Division of Infectious Diseases , University of Illinois at Chicago. 



Tuesday, February 9, 2016

The When & How of Male Circumcision & the Risk of HIV: A Retrospective Cross-Sectional Analysis of Two HIV Surveys from Guinea-Bissau

Introduction: Male circumcision (MC) reduces the risk of HIV, and this risk reduction may be modified by socio-cultural factors such as the timing and method (medical and traditional) of circumcision. Understanding regional variations in circumcision practices and their relationship to HIV is crucial and can increase insight into the HIV epidemic in Africa.

Methods: We used data from two retrospective HIV surveys conducted in Guinea-Bissau from 1993 to 1996 (1996 cohort) and from 2004 to 2007 (2006 cohort). Multivariate logistical models were used to investigate the relationships between HIV risk and circumcision status, age, method of circumcision, and socio-demographic factors.

Results: MC was protective against HIV infection in both cohorts, with adjusted odds ratios (AORs) of 0.28 (95% CI 0.12-0.66) and 0.30 (95% CI 0.09-0.93), respectively. We observed that post-pubertal (<13 years) circumcision provided the highest level of HIV risk reduction in both cohorts compared to non-circumcised. However, the difference between pre-pubertal (<13) and post-pubertal circumcision was not significant in the multivariate analysis. Seventy-six percent (678/888) of circumcised males in the 2006 cohort were circumcised traditionally, and 7.7% of those males were HIV-infected compared to 1.9% of males circumcised medically, with AOR of 2.7 (95% CI 0.91-8.12).

Conclusion: MC is highly prevalent in Guinea-Bissau, but ethnic variations in method and timing may affect its protection against HIV. Our findings suggest that sexual risk behaviour and traditional circumcision may increases HIV risk. The relationship between circumcision age, sexual behaviour and HIV status remains unclear and warrants further research.

Full article at:   http://goo.gl/iSGk3P

By:  Dlama Nggida Rasmussen1,2,3,&, Christian Wejse1,4,5, Olav Larsen1,2, Zacarias Da Silva1, Peter Aaby1,6, Morten Sodemann1,2,3
1Bandim Health Project, Indepth Network, Apartado 861, 1004 Bissau Codex, Bissau, Guinea-Bissau, 2Department of Infectious Diseases, Odense University Hospital, DK-5000 Odense, Denmark, 3Center for Global Health, Institute of Clinical Research, University of Southern Denmark, DK-5000 Odense, Denmark, 4Department of Infectious Diseases, Aarhus University Hospital, DK-8200 Aarhus, Denmark, 5Center for Global Health, Department of Public Health, Aarhus University, DK-8000 Aarhus, Denmark, 6Statens Serums Institute, DK-2300 Copenhagen, Denmark
&Corresponding author
Dlama Nggida Rasmussen, Department of Infectious Diseases, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense C, Denmark





Plastibell Circumcision of 2,276 Male Infants: A Multi-Centre Study

Introduction: the World Health Organization's manual on male circumcision listed Plastibell technique as a well-proven paediatric method with respect to the results and complications. Although, literatures abound on its wide acceptability, there are few multi- centered reports from this environment. The objective was to evaluate the cases of infant circumcision by Plastibell device from two medical institutions.

Methods: all consecutive infants who had Classical Plastibell Circumcision (PC) at the Federal Staff Medical Centre, Abuja and the Lagos State University Teaching Hospital, Ikeja between February 2011 and June 2015 were included in this cross-sectional study. The procedures were performed by surgical registrars and medical officers after ninety minutes of topical anesthesia to the penis. Data harvested from the standard proforma were analysed using Statistical Package for Social Science 20.0 for window.

Results: a total of 2,276 infants had classical PC within the study period. Their ages at circumcision ranged from 4 days to 3 months with a mean age of 17 days. Majority of the boys were circumcised at second week of life (n=1,394,61.2%). All the cases were performed for religious (53%) and cultural (47%)reasons. The most common Plastibell size deployed was 1.3cm (n=1,040, 45.7%) while 1.6cm was the least commonly used ring (n=10, 0.4%). The mean time for device to fall-off was 6 days (range 4- 12 days). There was no correlation between the age at circumcision and Plastibell size. We recorded an overall complication rate of 1.1% with postoperative bleeding leading the pack (n=12, 48%). No case of urethrocutaneous fistula was seen. We detected 17 cases (0.7%) of distal hypospadias in whom circumcisions were postponed till the time of hypospadias repairs.

Conclusion: the main indication for infant circumcision in our environment was religious. The PC has good safety profile with few easily correctable early complications. Detailed attention to placement of ligature, selection of appropriate Plastibell size and adequate parental education are key to preventing post-procedure mishaps.

Below:  Plastibell size deployed



Full article at:   http://goo.gl/p9316L

By:  Bioku Muftau Jimoh1,&, Ikuerowo Stephen Odunayo2, Igwilo Chinwe3, Omisanjo Olufunmilade Akinfolarin2, Adewumi Oluwafemi3, Esho Julius Olusanmi2
1Department of Surgery, Federal Staff Medical Centre, Abuja, 2Urology Unit, Department of Surgery, Lagos State University Teaching Hospital, Ikeja, 3Department of Obstetrics and Gynecology, Federal Staff Medical Centre, Abuja




Saturday, January 16, 2016

Triggering the Decision to Undergo Medical Male Circumcision: A Qualitative Study of Adult Men in Botswana

In 2007, the World Health Organization endorsed voluntary medical male circumcision (VMMC) as part of comprehensive HIV-prevention strategies. A major challenge facing VMMC programs in sub-Saharan Africa remains demand creation; there is urgent need for data on key elements needed to trigger the decision among eligible men to seek VMMC. 

Using qualitative methods, we sought to better understand the circumcision decision-making process in Botswana related to VMMC. From July to November 2013, we conducted 27 focus group discussions in four purposively selected communities in Botswana with men (stratified by circumcision status and age), women (stratified by age) and community leaders. All discussions were facilitated by a trained same-sex interviewer, audio recorded, transcribed and translated to English, and analyzed for key themes using an inductive content analytic approach. 

Improved hygiene was frequently cited as a major benefit of circumcision and many participants believed that cleanliness was directly responsible for the protective effect of VMMC on HIV infection. While protection against HIV was frequently noted as a benefit of VMMC, the data indicate that increased sexual pleasure and perceived attractiveness, not fear of HIV infection, was an underlying reason why men sought VMMC. 

Data from this qualitative study suggest that more immediate benefits of VMMC, such as improved hygiene and sexual pleasure, play a larger role in the circumcision decision compared with protection from potential HIV infection. 

These findings have immediate implications for targeted demand creation and mobilization activities for increasing uptake of VMMC among adult men in Botswana.

Purchase full article at:   http://goo.gl/md8EE0

By:  Wirth KE1,2,3Semo BW1,4Ntsuape C5Ramabu NM1Otlhomile B1Plank RM3,6,7Barnhart S4Ledikwe JH1,4.
  • 1 Botswana International Training and Education Center for Health (I-TECH) , Gaborone , Botswana.
  • 2 Department of Epidemiology , Harvard T. H. Chan School of Public Health , Boston , Massachusetts , USA.
  • 3 Department of Immunology and Infectious Diseases , Harvard T. H. Chan School of Public Health , Boston , Massachusetts , USA.
  • 4 Department of Global Health , University of Washington , Seattle , Washington , USA.
  • 5 Department of HIV/AIDS Prevention and Care , Botswana Ministry of Health , Gaborone , Botswana.
  • 6 Division of Infectious Diseases , Brigham and Women's Hospital , Boston , Massachusetts , USA.
  • 7 Botswana-Harvard School of Public Health AIDS Initiative Partnership for HIV Research and Education , Gaborone , Botswana.
  •  2016 Jan 11:1-6.  





Friday, January 15, 2016

Correlates pf Prevalent HIV Infection among Adults & Adolescents in Kisumu, Kenya

We estimated HIV prevalence and identified correlates of HIV infection among 1106 men and women aged 16–34 years residing in Kisumu, Kenya. Demographic, sexual, and other behavioural data were collected using audio computer-assisted self-interview in conjunction with a medical examination, real-time parallel rapid HIV testing, and laboratory testing for pregnancy, gonorrhoea, chlamydia, syphilis, and herpes simplex virus type 2. Multivariate logistic regression was used to identify variables associated with prevalent HIV infection by gender. 

  • Overall HIV prevalence was 12.1%. 
  • HIV prevalence among women (17.1%) was approximately two and one half times the prevalence among men (6.6%). 
  • Odds of HIV infection in men 
    • increased with age and 
    • were greater among those who were uncircumcised 
    • and those who had an herpes simplex virus type 2 positive test result. 
  • Odds of prevalent HIV infection among women also 
    • increased with age. 
    • Women who tested herpes simplex virus type 2 positive had more than three times the odds of prevalent HIV infection compared with those who tested herpes simplex virus type 2 negative. 
Tailored sexual health interventions and programs may help mitigate HIV age and gender disparities.

Correlates of HIV infection among men, Kisumu Incidence Cohort Study, Kenya, 2007–2010.
HIV Prevalence at Screening

Bivariate

Multiple Regression

N%OR (95% CI)p-valueaOR** (95% CI)p-value
Age*1.20 (1.11, 1.29)<.00011.21 (1.07, 1.35).0017
Marital status.0373.2976
 Single/never married215.3RefRef
 Married/living as married129.81.95 (0.93, 4.08)0.47 (0.14, 1.57)
 Separated/divorced/widowed225.06.00 (1.14, 31.54)2.08 (0.24, 18.07)
Religion.5776
 Roman Catholic115.2Ref
 Protestant or other Christian156.81.32 (0.59, 2.94)
 Muslim/Nomiya/Other78.11.58 (0.59, 4.23)
 No religion213.32.78 (0.56, 13.90)
Highest education level.0030.2421
 Never attended school627.39.25 (2.67, 32.08)4.47 (0.95, 21.06)
 Primary school127.62.01 (0.74, 5.51)1.41 (0.42, 4.74)
 Secondary school115.71.48 (0.54, 4.10)1.15 (0.38, 3.50)
 Post-secondary schoola63.9RefRef
Currently working.8029
 Yes166.91.09 (0.55, 2.17)
 No196.4ref
Lifetime number of sexual partnersb.3646
 1–224.4Ref
 3–474.71.09 (0.22, 5.41)
 5 or more257.91.88 (0.43, 8.20)
Ever had anal sex.2108.1577
 Yes33.40.46 (0.14, 1.55)0.37 (0.09, 1.48)
 No317.0RefRef
Ever had oral sex.9831
 Yes96.61.01 (0.46, 2.21)
 No266.6Ref
Ever been forced into sex.5502
 Yes68.21.32 (0.53, 3.30)
 No296.4Ref
Number of sexual partners in the past three monthsb.9009.4761
 0514.3RefRef
 154.40.27 (0.07, 1.00)0.31 (0.06, 1.59)
 2–3136.10.39 (0.13, 1.18)0.34 (0.08, 1.39)
 4 or more127.30.47 (0.16, 1.44)0.42 (0.10, 1.74)
Any unprotected vaginal or anal sex in the past three months.6114
 Yes34.41.38 (0.40, 4.70)
 No246.0Ref
Sex during special occasions in the past three months.6831
 Yes105.50.85 (0.39, 1.86)
 No206.4Ref
STI history<.0001.0966
 Never194.3RefRef
 Not recent1015.44.03 (1.78, 9.12)2.09 (0.76, 5.78)
 Recent (past three months)624.07.00 (2.51, 19.53)3.40 (0.99, 11.65)
HSV-2 results<.0001.0489
 Positive1220.76.82 (3.04, 15.29)3.13 (1.12, 8.73)
 Indeterminate716.75.23 (2.02, 13.55)3.04 (0.95, 9.71)
 Negative163.7RefRef
Circumcision as confirmed by physical examination (men).0070.0109
 Uncircumcised318.94.29 (1.49, 12.35)4.42 (1.41, 13.89)
 Circumcised42.2RefRef
aPost-secondary education includes technical/vocational training, college, or university.
bPersons with whom the participant had vaginal or anal sex.
*Continuous variable.
**Odds ratios and confidence intervals adjusted for all variables listed in the column (i.e. all variables with p <.25 in bivariate models).


Correlates of HIV infection among women, Kisumu Incidence Cohort Study, Kenya, 2007–2010.
HIV Prevalence at Screening

Bivariate

Multiple Regression

N%OR** (95% CI)p-valueaOR** (95% CI)p-value
Age*1.17 (1.11, 1.23)<.00011.16 (1.04, 1.29).0085
Marital status<.0001.9456
 Single/never married3610.3RefRef
 Married/living as married4424.22.76 (1.70, 4.48)1.00 (0.34, 2.97)
 Separated/divorced/widowed1641.06.03 (2.92, 12.45)1.26 (0.29, 5.52)
Religion.8482
 Roman Catholic4817.3Ref
 Protestant or other Christian2815.30.87 (0.52, 1.44)
 Muslim/Nomiya/Other1719.51.16 (0.63, 2.15)
 No religion418.21.07 (0.35, 3.29)
Highest education level.0096.3554
 Never attended school833.34.21 (1.53, 11.61)4.77 (0.49, 46.07)
 Primary school4821.22.26 (1.19, 4.28)3.05 (0.84, 11.08)
 Secondary school2714.41.42 (0.72, 2.83)2.31 (0.66, 8.08)
 Post-secondary schoola1410.6RefRef
Currently working.0038.6743
 Yes4723.31.92 (1.24, 2.99)0.83 (0.35, 1.96)
 No5013.6RefRef
Lifetime number of sexual partnersb*.0010.2903
 1–2117.8RefRef
 3–44017.52.53 (1.25, 5.12)2.52 (0.75, 8.47)
 ≥54124.33.81 (1.88, 7.74)1.68 (0.46, 6.16)
Ever had anal sex.0940.5813
 Yes1912.50.63 (0.37, 1.08)0.73 (0.24, 2.21)
 No7618.5RefRef
Ever had oral sex.5928
 Yes1715.20.86 (0.48, 1.52)
 No7817.3Ref
Ever been forced into sex.3499
 Yes2919.51.26 (0.78, 2.04)
 No6816.1Ref
Number of sexual partners in the past three monthsb.6828
 0617.1Ref
 15115.60.89 (0.35, 2.27)Ref
 2–32818.01.06 (0.40, 2.79)
 4 or more1419.41.17 (0.41, 3.35)
Any unprotected vaginal or anal sex in the past three months.0725.5167
 Yes7018.11.96 (0.94, 4.10)0.70 (0.24, 2.06)
 No910.1RefRef
Sex during special occasions in the past three months.7423
 Yes1917.91.10 (0.63, 1.92)
 No7116.6Ref
STI history<.0001.9115
 Not recent1015.44.03 (1.78, 9.11)1.38 (0.32, 5.90)
 Recent (past three months)624.07.00 (2.51, 19.53)1.00 (0.08, 11.81)
 Never194.3RefRef
HSV-2 results<.0001.0114
 Positive7635.512.92 (6.94, 24.06)3.85 (1.38, 10.71)
 Indeterminate923.17.04 (2.78, 17.82)0.88 (0.14, 5.59)
 Negative134.1RefRef
Pregnant as confirmed by lab test (women).0963.9837
 Yes828.62.06 (0.88, 4.82)0.98 (0.09, 10.66)
 No8816.3RefRef
Used birth control pills to delay or avoid pregnancy in the past three months (women).0484.5334
 Yes3323.11.96 (1.01, 3.82)1.38 (0.51, 3.74)
 No1513.3RefRef
Used injections to delay or avoid pregnancy in the past three months (women).0355.9940
 Yes3324.12.02 (1.05, 3.90)1.00 (0.38, 2.67)
 No1613.6RefRef
aPost-secondary education includes technical/vocational training, college, or university.
bPersons with whom the participant had vaginal or anal sex.
*Continuous variable.
**Odds ratios and confidence intervals adjusted for all variables listed in the column (i.e. all variables with p <.25 in bivariate models).

Full article at:   http://goo.gl/NFjq0f

1Kenya Medical Research Institute, Kisumu, Kenya
2Centers for Disease Control and Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Division of HIV/AIDS Prevention, Atlanta, GA, USA
3Centers for Disease Control and Prevention, HIV-Research Branch, Kisumu, Kenya
Corresponding author: Anne Gumbe, International AIDS Vaccine Initiative, ABC Place (Building 2,3rd Fl) Waiyaki Way, PO Box 340 KNH, Nairobi, Kenya.  gro.ivai@ebmuga