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Featured researches published by Delivette Castor.


PLOS Medicine | 2011

Voluntary medical male circumcision: modeling the impact and cost of expanding male circumcision for HIV prevention in eastern and southern Africa.

Emmanuel Njeuhmeli; Steven Forsythe; Jason Reed; Marjorie Opuni; Lori Bollinger; Nathan Heard; Delivette Castor; John Stover; Timothy M.M. Farley; Veena Menon; Catherine Hankins

Emmanuel Njeuhmeli and colleagues estimate the impact and cost of scaling up adult medical male circumcision in 13 priority countries in eastern and southern Africa, finding that reaching 80% coverage and maintaining it until 2025 would avert 3.36 million new HIV infections.


PLOS Medicine | 2011

Voluntary Medical Male Circumcision: Strategies for Meeting the Human Resource Needs of Scale-Up in Southern and Eastern Africa

Kelly Curran; Emmanuel Njeuhmeli; Andrew Mirelman; Kim Dickson; Tigistu Adamu; Peter Cherutich; Hally Mahler; Bennett Fimbo; Thembisile Khumalo Mavuso; Jennifer Albertini; Laura Fitzgerald; Naomi Bock; Jason Reed; Delivette Castor; David Stanton

Kelly Curran and colleagues conducted a program review to identify human resource approaches that are being used to improve voluntary medical male circumcision volume and efficiency, identifying several innovative responses to human resource challenges.


PLOS Medicine | 2011

Voluntary Medical Male Circumcision: Matching Demand and Supply with Quality and Efficiency in a High-Volume Campaign in Iringa Region, Tanzania

Hally Mahler; Baldwin Kileo; Kelly Curran; Marya Plotkin; Tigistu Adamu; Augustino Hellar; Sifuni Koshuma; Simeon Nyabenda; Michael Machaku; Mainza Lukobo-Durrell; Delivette Castor; Emmanuel Njeuhmeli; Bennett Fimbo

Hally Mahler and colleagues evaluate a six-week voluntary medical male circumcision campaign in Iringa province of Tanzania, providing a model for matching supply with demand for services and showing that high-volume circumcisions can be performed without compromising client safety.


Global health, science and practice | 2013

''Man, what took you so long?'' Social and individual factors affecting adult attendance at voluntary medical male circumcision services in Tanzania

Marya Plotkin; Delivette Castor; Hawa Mziray; Jan Küver; Ezekiel Mpuya; Paul James Luvanda; Augustino Hellar; Kelly Curran; Mainza Lukobo-Durell; Tigistu Adamu Ashengo; Hally Mahler

In a study in Tanzania, men and women generally supported male circumcision; however, cultural values that the procedure is most appropriate before adolescence, shame associated with being circumcised at an older age, and concerns about the post-surgical abstinence period have led to low uptake among older men. In a study in Tanzania, men and women generally supported male circumcision; however, cultural values that the procedure is most appropriate before adolescence, shame associated with being circumcised at an older age, and concerns about the post-surgical abstinence period have led to low uptake among older men. ABSTRACT Background: In 2009, the Government of Tanzania embarked on scaling up voluntary medical male circumcision (VMMC) services for HIV prevention in 8 priority regions, with the aim of serving 2.8 million boys and men ages 10–34 years by 2013. By mid-2012, more than 110,000 boys and men in Iringa and Njombe regions had received VMMC. The majority (85%) of these VMMC clients were under 19 years old (average age, 16 years). This study aimed to identify potential barriers and facilitators to VMMC among older men. Methods: We conducted 16 focus group discussions, stratified by sex and age, with 142 purposefully selected participants in 3 districts of Iringa and Njombe regions. Results: Both men and women generally had positive attitudes toward VMMC. Social and personal barriers to obtaining VMMC among adult men included shame associated with seeking services co-located with younger boys and perceived inappropriateness of VMMC after puberty, particularly after marriage and after having children. Additional barriers included concerns about partner infidelity during the post-surgical abstinence period, loss of income, and fear of pain associated with post-surgical erections. Facilitators included awareness of the HIV-prevention benefit and perceptions of cleanliness and enhanced attractiveness to women. Conclusions: While men and women in Iringa and Njombe regions in Tanzania generally view VMMC as a desirable procedure, program implementers need to address barriers to VMMC services among adult men. Selected service delivery sites in the Iringa and Njombe regions will be segregated by age to provide services that are “friendly” to adult men. Services will be complemented with behavior change communication initiatives to address concerns of older men, encourage women’s support for circumcision and adherence to the post-surgical abstinence period, and change social norms that inhibit older men from seeking circumcision.


Journal of Acquired Immune Deficiency Syndromes | 2014

Lessons learned from scale-up of voluntary medical male circumcision focusing on adolescents: benefits, challenges, and potential opportunities for linkages with adolescent HIV, sexual, and reproductive health services.

Emmanuel Njeuhmeli; Karin Hatzold; Elizabeth S. Gold; Hally Mahler; Katharine Kripke; Kim Seifert-Ahanda; Delivette Castor; Mavhu W; Owen Mugurungi; Getrude Ncube; Koshuma S; Sema K. Sgaier; Conly; Kasedde S

Background and Methods:By December 2013, it was estimated that close to 6 million men had been circumcised in the 14 priority countries for scaling up voluntary medical male circumcision (VMMC), the majority being adolescents (10–19 years). This article discusses why efforts to scale up VMMC should prioritize adolescent men, drawing from new evidence and experiences at the international, country, and service delivery levels. Furthermore, we review the extent to which VMMC programs have reached adolescents, addressed their specific needs, and can be linked to their sexual and reproductive health and other key services. Results and Discussion:In priority countries, adolescents represent 34%–55% of the target population to be circumcised, whereas program data from these countries show that adolescents represent between 35% and 74% of the circumcised men. VMMC for adolescents has several advantages: uptake of services among adolescents is culturally and socially more acceptable than for adults; there are fewer barriers regarding sexual abstinence during healing or female partner pressures; VMMC performed before the age of sexual debut has maximum long-term impact on reducing HIV risk at the individual level and consequently reduces the risk of transmission in the population. Offered as a comprehensive package, adolescent VMMC can potentially increase public health benefits and offers opportunities for addressing gender norms. Additional research is needed to assess whether current VMMC services address the specific needs of adolescent clients, to test adapted tools, and to assess linkages between VMMC and other adolescent-focused HIV, health, and social services.


PLOS ONE | 2014

Cost analysis of integrating the PrePex medical device into a voluntary medical male circumcision program in Zimbabwe.

Emmanuel Njeuhmeli; Katharine Kripke; Karin Hatzold; Jason S. Reed; Dianna Edgil; Juan Jaramillo; Delivette Castor; Steven Forsythe; Sinokuthemba Xaba; Owen Mugurungi

Background Fourteen African countries are scaling up voluntary medical male circumcision (VMMC) for HIV prevention. Several devices that might offer alternatives to the three WHO-approved surgical VMMC procedures have been evaluated for use in adults. One such device is PrePex, which was prequalified by the WHO in May 2013. We utilized data from one of the PrePex field studies undertaken in Zimbabwe to identify cost considerations for introducing PrePex into the existing surgical circumcision program. Methods and Findings We evaluated the cost drivers and overall unit cost of VMMC at a site providing surgical VMMC as a routine service (“routine surgery site”) and at a site that had added PrePex VMMC procedures to routine surgical VMMC as part of a research study (“mixed study site”). We examined the main cost drivers and modeled hypothetical scenarios with varying ratios of surgical to PrePex circumcisions, different levels of site utilization, and a range of device prices. The unit costs per VMMC for the routine surgery and mixed study sites were


PLOS ONE | 2014

Systematic Monitoring of Voluntary Medical Male Circumcision Scale-Up: Adoption of Efficiency Elements in Kenya, South Africa, Tanzania, and Zimbabwe

Jane T. Bertrand; Dino Rech; Dickens Omondi Aduda; Sasha Frade; Mores Loolpapit; Michael Machaku; Mathews Oyango; Webster Mavhu; Alexandra Spyrelis; Linnea Perry; Margaret Farrell; Delivette Castor; Emmanuel Njeuhmeli

56 and


PLOS ONE | 2014

Quality of Voluntary Medical Male Circumcision Services during Scale-Up: A Comparative Process Evaluation in Kenya, South Africa, Tanzania and Zimbabwe

Larissa Jennings; Jane T. Bertrand; Dino Rech; Steven A. Harvey; Karin Hatzold; Christopher A. Samkange; Dickens S. Omondi Aduda; Bennett Fimbo; Peter Cherutich; Linnea Perry; Delivette Castor; Emmanuel Njeuhmeli

61, respectively. The two greatest contributors to unit price at both sites were consumables and staff. In the hypothetical scenarios, the unit cost increased as site utilization decreased, as the ratio of PrePex to surgical VMMC increased, and as device price increased. Conclusions VMMC unit costs for routine surgery and mixed study sites were similar. Low service utilization was projected to result in the greatest increases in unit price. Countries that wish to incorporate PrePex into their circumcision programs should plan to maximize staff utilization and ensure that sites function at maximum capacity to achieve the lowest unit cost. Further costing studies will be necessary once routine implementation of PrePex-based circumcision is established.


PLOS ONE | 2014

Voluntary Medical Male Circumcision (VMMC) in Tanzania and Zimbabwe: Service Delivery Intensity and Modality and Their Influence on the Age of Clients

Tigistu Adamu Ashengo; Karin Hatzold; Hally Mahler; Amelia Rock; Natasha Kanagat; Sophia Magalona; Kelly Curran; Alice Christensen; Delivette Castor; Owen Mugurungi; Roy Dhlamini; Sinokuthemba Xaba; Emmanuel Njeuhmeli

Background SYMMACS, the Systematic Monitoring of the Voluntary Medical Male Circumcision Scale-up, tracked the implementation and adoption of six elements of surgical efficiency— use of multiple surgical beds, pre-bundled kits, task shifting, task sharing, forceps-guided surgical method, and electrocautery—as standards of surgical efficiency in Kenya, South Africa, Tanzania, and Zimbabwe. Methods and Findings This multi-country study used two-staged sampling. The first stage sampled VMMC sites: 73 in 2011, 122 in 2012. The second stage involved sampling providers (358 in 2011, 591 in 2012) and VMMC procedures for observation (594 in 2011, 1034 in 2012). The number of VMMC sites increased significantly between 2011 and 2012; marked seasonal variation occurred in peak periods for VMMC. Countries adopted between three and five of the six elements; forceps-guided surgery was the only element adopted by all countries. Kenya and Tanzania routinely practiced task-shifting. South Africa and Zimbabwe used pre-bundled kits with disposable instruments and electrocautery. South Africa, Tanzania, and Zimbabwe routinely employed multiple surgical bays. Conclusions SYMMACS is the first study to provide data on the implementation of VMMC programs and adoption of elements of surgical efficiency. Findings have contributed to policy change on task-shifting in Zimbabwe, a review of the monitoring system for adverse events in South Africa, an increased use of commercially bundled VMMC kits in Tanzania, and policy dialogue on improving VMMC service delivery in Kenya. This article serves as an overview for five other articles following this supplement.


PLOS ONE | 2014

Implications of the fast-evolving scale-up of adult voluntary medical male circumcision for quality of services in South Africa.

Dino Rech; Alexandra Spyrelis; Sasha Frade; Linnea Perry; Margaret Farrell; Rebecca Fertziger; Carlos Toledo; Delivette Castor; Emmanuel Njeuhmeli; Dayanund Loykissoonlal; Jane T. Bertrand

Background The rapid expansion of voluntary medical male circumcision (VMMC) has raised concerns whether health systems can deliver and sustain VMMC according to minimum quality criteria. Methods and Findings A comparative process evaluation was used to examine data from SYMMACS, the Systematic Monitoring of the Voluntary Medical Male Circumcision Scale-Up, among health facilities providing VMMC across two years of program scale-up. Site-level assessments examined the availability of guidelines, supplies and equipment, infection control, and continuity of care services. Direct observation of VMMC surgeries were used to assess care quality. Two sample tests of proportions and t-tests were used to examine differences in the percent of facilities meeting requisite preparedness standards and the mean number of directly-observed surgical tasks performed correctly. Results showed that safe, high quality VMMC can be implemented and sustained at-scale, although substantial variability was observed over time. In some settings, facility preparedness and VMMC service quality improved as the number of VMMC facilities increased. Yet, lapses in high performance and expansion of considerably deficient services were also observed. Surgical tasks had the highest quality scores, with lower performance levels in infection control, pre-operative examinations, and post-operative patient monitoring and counseling. The range of scale-up models used across countries additionally underscored the complexity of delivering high quality VMMC. Conclusions Greater efforts are needed to integrate VMMC scale-up and quality improvement processes in sub-Saharan African settings. Monitoring of service quality, not just adverse events reporting, will be essential in realizing the full health impact of VMMC for HIV prevention.

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Emmanuel Njeuhmeli

United States Agency for International Development

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Karin Hatzold

Population Services International

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Bennett Fimbo

Ministry of Health and Social Welfare

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Sema K. Sgaier

University of Washington

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