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Dive into the research topics where Karin Hatzold is active.

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Featured researches published by Karin Hatzold.


Journal of Acquired Immune Deficiency Syndromes | 2010

Evaluation of the PIMA point-of-care CD4 analyzer in VCT clinics in Zimbabwe.

Sekesai Mtapuri-Zinyowera; Memory Chideme; Douglas Mangwanya; Owen Mugurungi; Stephano Gudukeya; Karin Hatzold; Alexio Mangwiro; Gaurav Bhattacharya; Jonathan Lehe; Trevor Peter

Point-of-care (POC) CD4 testing was implemented at a stand-alone HIV voluntary testing and counseling centre in Harare, Zimbabwe. To validate the use of this new technology, paired blood samples were collected from 165 patients either by a nurse or a laboratory technician and tested using POC and conventional laboratory CD4 machines. Finger prick (capillary) blood was collected directly into the PIMA POC CD4 Analyzer cartridges and tested immediately, whereas venous blood collected into evacuated tubes was used for CD4 enumeration on a Becton Dickinson FACSCalibur. There was no significant difference in mean absolute CD4 counts between the POC PIMA and Becton Dickinson FACSCalibur platforms (+7.6 cells/μL; P = 0.72). Additionally, there was no significant difference in CD4 counts between the platforms when run by either a nurse (+18.0 cells/μL; P = 0.49), or a laboratory technicians (−3.1 cells/μL; P = 0.93). This study demonstrates that POC CD4 testing can be conducted in a voluntary testing and counseling setting for staging HIV-positive clients. Both nurses and laboratory technicians performed the test accurately, thereby increasing the human resources available for POC CD4 testing. By producing same-day results, POC CD4 facilitates immediate decision-making, patient management and referral and may help improve patient care and retention. POC CD4 may also alleviate testing burdens at traditional central CD4 laboratories, hence improving test access in both rural and urban environments.


PLOS ONE | 2014

Barriers and Motivators to Voluntary Medical Male Circumcision Uptake among Different Age Groups of Men in Zimbabwe: Results from a Mixed Methods Study

Karin Hatzold; Webster Mavhu; Phineas Jasi; Kumbirai Chatora; Frances M. Cowan; Noah Taruberekera; Owen Mugurungi; Emmanuel Njeuhmeli

Background We conducted quantitative and qualitative studies to explore barriers and motivating factors to VMMC for HIV prevention, and to assess utilization of existing VMMC communication channels. Methods and Findings A population-based survey was conducted with 2350 respondents aged 15–49. Analysis consisted of descriptive statistics and bivariate analysis between circumcision and selected demographics. Logistic regression was used to determine predictors of male circumcision uptake compared to intention to circumcise. Focus group discussions (FGDs) were held with men purposively selected to represent a range of ethnicities. 68% and 53% of female/male respondents, respectively, had heard about VMMC for HIV prevention, mostly through the radio (71%). Among male respondents, 11.3% reported being circumcised and 49% reported willingness to undergo VMMC. Factors which men reported motivated them to undergo VMMC included HIV/STI prevention (44%), improved hygiene (26%), enhanced sexual performance (6%) and cervical cancer prevention for partner (6%). Factors that deterred men from undergoing VMMC included fear of pain (40%), not believing that they were at risk of HIV (18%), lack of partner support (6%). Additionally, there were differences in motivators and barriers by age. FGDs suggested additional barriers including fear of HIV testing, partner refusal, reluctance to abstain from sex and myths and misconceptions. Conclusions VMMC demand-creation messages need to be specifically tailored for different ages and should emphasize non-HIV prevention benefits, such as improved hygiene and sexual appeal, and need to address mens fear of pain. Promoting VMMC among women is crucial as they appear to have considerable influence over mens decision to get circumcised.


Journal of Acquired Immune Deficiency Syndromes | 2012

Voluntary medical male circumcision: an HIV prevention priority for PEPFAR.

Jason Reed; Emmanuel Njeuhmeli; Anne Thomas; Melanie C. Bacon; Robert C. Bailey; Peter Cherutich; Kelly Curran; Kim E Dickson; Tim Farley; Catherine Hankins; Karin Hatzold; Zebedee Mwandi; Luke Nkinsi; Renee Ridzon; Caroline Ryan; Naomi Bock

Abstract: As the science demonstrating strong evidence for voluntary medical male circumcision (VMMC) for HIV prevention has evolved, the Presidents Emergency Plan for AIDS Relief (PEPFAR) has collaborated with international agencies, donors, and partner country governments supporting VMMC programming. Mathematical models forecast that quickly reaching a large number of uncircumcised men with VMMC in strategically chosen populations may dramatically reduce community-level HIV incidence and save billions of dollars in HIV care and treatment costs. Because VMMC is a 1-time procedure that confers life-long partial protection against HIV, programs for adult men are vital short-term investments with long-term benefits. VMMC also provides a unique opportunity to reach boys and men with HIV testing and counseling services and referrals for other HIV services, including treatment. After formal recommendations by WHO in 2007, priority countries have pursued expansion of VMMC. More than 1 million males have received VMMC thus far, with the most notable successes coming from Kenyas Nyanza Province. However, a myriad of necessary cultural, political, and ethical considerations have moderated the pace of overall success. Because many millions more uncircumcised men would benefit from VMMC services now, US President Barack Obama committed PEPFAR to provide 4.7 million males with VMMC by 2014. Innovative circumcision methods—such as medical devices that remove the foreskin without injected anesthesia and/or sutures—are being rigorously evaluated. Incorporation of safe innovations into surgical VMMC programs may provide the opportunity to reach more men more quickly with services and dramatically reduce HIV incidence for all.


Tropical Medicine & International Health | 2011

Prevalence and factors associated with knowledge of and willingness for male circumcision in rural Zimbabwe

Webster Mavhu; Raluca Buzdugan; Lisa F. Langhaug; Karin Hatzold; Clemens Benedikt; Judith Sherman; Susan M. Laver; Oscar Mundida; Godfrey Woelk; Frances M. Cowan

Objective  To explore male circumcision (MC) prevalence, knowledge, attitudes and intentions among rural Zimbabweans.


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

Behavior change pathways to voluntary medical male circumcision: narrative interviews with circumcision clients in Zambia.

Jessica E Price; Lyson Phiri; Drosin M Mulenga; Paul C. Hewett; Stephanie M. Topp; Nicholas Shiliya; Karin Hatzold

56 and


Journal of Acquired Immune Deficiency Syndromes | 2017

The HIV care cascade among female sex workers in Zimbabwe: results of a population-based survey from the Sisters Antiretroviral therapy Programme for Prevention of HIV, an Integrated Response (SAPPH-IRe) Trial.

Frances M. Cowan; Calum Davey; Elizabeth Fearon; Phillis Mushati; Jeffrey Dirawo; Valentina Cambiano; Sue Napierala Mavedzenge; Dagmar Hanisch; Ramona Wong-Gruenwald; Milton Chemhuru; Nyasha Masuka; Karin Hatzold; Owen Mugurungi; Joanna Busza; Andrew Phillips; James Hargreaves

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

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

As an HIV prevention strategy, the scale-up of voluntary medical male circumcision (VMMC) is underway in 14 countries in Africa. For prevention impact, these countries must perform millions of circumcisions in adolescent and adult men before 2015. Although acceptability of VMMC in the region is well documented and service delivery efforts have proven successful, countries remain behind in meeting circumcision targets. A better understanding of mens VMMC-seeking behaviors and experiences is needed to improve communication and interventions to accelerate uptake. To this end, we conducted semi-structured interviews with 40 clients waiting for surgical circumcision at clinics in Zambia. Based on Stages of Change behavioral theory, men were asked to recount how they learned about adult circumcision, why they decided it was right for them, what they feared most, how they overcame their fears, and the steps they took to make it to the clinic that day. Thematic analysis across all cases allowed us to identify key behavior change triggers while within-case analysis elucidated variants of one predominant behavior change pattern. Major stages included: awareness and critical belief adjustment, norming pressures and personalization of advantages, a period of fear management and finally VMMC-seeking. Qualitative comparative analysis of ever-married and never-married men revealed important similarities and differences between the two groups. Unprompted, 17 of the men described one to four failed prior attempts to become circumcised. Experienced more frequently by older men, failed VMMC attempts were often due to service-side barriers. Findings highlight intervention opportunities to increase VMMC uptake. Reaching uncircumcised men via close male friends and female sex partners and tailoring messages to stage-specific concerns and needs would help accelerate mens movement through the behavior change process. Expanding service access is also needed to meet current demand. Improving clinic efficiencies and introducing time-saving procedures and advance scheduling options should be considered.


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

Introduction: Female sex workers (FSW) in sub-Saharan Africa have a higher prevalence of HIV than other women of reproductive age. Social, legal, and structural barriers influence their access to care. Little is known about the HIV diagnosis and care cascade in most countries in Southern Africa. We aimed to describe the HIV diagnosis and care cascade among FSW in Zimbabwe. Methods: We conducted cross-sectional respondent driven sampling (RDS) surveys of FSW in 14 sites across Zimbabwe as the baseline for a cluster-randomised controlled trial investigating a combination HIV prevention and care package. We administered a questionnaire, tested women for HIV and measured viral load. We report the mean, minimum, and maximum respondent-driven sampling-2 weighted site values. Results: The survey included 2722 women, approximately 200 per site. The mean HIV prevalence was 57.5% (42.8–79.2 site minimum and maximum). Of HIV-positive women, 64.0% (51.6–73.7) were aware of their status, 67.7% (53.4–84.1) of these reported taking antiretroviral therapy, and 77.8% (64.4–90.8) of these had a suppressed HIV viral load (<1000 copies/mL). Among all HIV-positive women, 49.5% had a viral load < 1000 copies/mL. Conclusions: Although most HIV-positive women aware of their status are accessing antiretroviral therapy, 36.0% of HIV-positive women are unaware of their status and 29.3% of all FSW have an unsuppressed HIV viral load. Investigation and investment into models of testing, treatment, and care are necessary to reach UNAIDS targets for HIV elimination.

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Owen Mugurungi

Ministry of Health and Child Welfare

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Getrude Ncube

Ministry of Health and Child Welfare

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Emmanuel Njeuhmeli

United States Agency for International Development

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Gissenge Lija

Ministry of Health and Social Welfare

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Sinokuthemba Xaba

Ministry of Health and Child Welfare

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Eshan U. Patel

Johns Hopkins University School of Medicine

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