Tuberculosis (TB) is the most common opportunistic illness and a leading cause of death among people living with HIV (PLWH), accounting for about a quarter of HIV-related deaths worldwide.1,2 Among approximately 8.8 million incident cases of TB in 2010, 2.3 million were in Africa, where 39% were coinfected with HIV.2
The US President's Emergency Plan for AIDS Relief (PEPFAR) has supported a comprehensive package of care in which interventions to address HIV-related TB have received increased funding and support in recent years. Our objectives are to summarize the impact of PEPFAR's support of collaborative TB/HIV activities and to outline unresolved issues to be addressed by future programming.
PEPFAR's TB/HIV programming is based on the World Health Organization's (WHO) 12-point policy for collaborative TB/HIV activities,3 which are integrated into PEPFAR annual guidance.4 PEPFAR's resource allocation decisions must meet a “certain impact” criterion; supporting scale-up of TB/HIV activities is emphasized as a funding priority.
From 2005 to 2011, funding allocated for TB/HIV activities increased from $19 million to $160 million per year. Demonstration projects to boost the programming of collaborative TB/HIV activities were initiated in Ethiopia, Kenya, and Rwanda through collaboration among PEPFAR, WHO, and national TB and HIV programs in 2005. The main objective of these demonstration projects was to expand HIV testing for TB patients as a gateway for comprehensive care including antiretroviral therapy (ART) and cotrimoxazole prophylaxis. They were also intended to scale up TB screening and the provision of isoniazid preventive therapy (IPT) for PLWH. These demonstration projects resulted in significantly improved outcomes, particularly for the interventions provided for HIV-infected TB patients, which were achieved by addressing policy and programmatic bottlenecks in the 3 countries. Based on these experiences and also to further enhance the provision of TB interventions among PLWH in more countries, a workshop was cosponsored by PEPFAR, the Bill and Melinda Gates Foundation, and WHO in 2007 to stimulate additional action in PEPFAR-supported countries5; an additional $50 million was made available to spur on further scale-up. At this workshop, key actions for priority areas were identified. Countries developed draft activity plans based on WHO-recommended activities that formed the basis of subsequent national consultations and consensus building for accelerated programming and funding through PEPFAR and other mechanisms such as the Global Fund. This funding was made available via the PEPFAR country operational planning process, which is the vehicle through which funding allocations are matched to programmatic priorities.
Primarily through experiences garnered from PEPFAR-supported countries and the involvement of PEPFAR implementing partners, in 2008, WHO branded the essential TB interventions for PLWH as “Three Is for HIV/TB” (intensified case finding, isoniazid preventive therapy, infection control).6 Implementation of the “Three Is” in the context of comprehensive collaborative TB/HIV activities has been promoted through integration in PEPFAR-supported care, treatment, and laboratory infrastructure ever since. PEPFAR programs are particularly well-placed to catalyze accelerated uptake of the “Three Is” and the requisite coordination of TB and HIV services at the clinic and community levels, using more than 13,500 PEPFAR-supported HIV care and treatment sites, including 5200 providing ART.
SUCCESSES OF PEPFAR
Coordination Between TB and HIV Programming
Implementation of collaborative TB/HIV activities requires coordination between TB and HIV programs at all levels.7 The epidemiology of HIV and TB as well as health system factors and challenges specific to individual countries8 must be considered, to develop tailored TB and HIV service delivery models.3 PEPFAR implementing partners have provided crucial support to TB/HIV collaboration, and as a result, PEPFAR-supported countries in sub-Saharan Africa are among the first to demonstrate that effective coordination and collaboration between TB and HIV programs can result in nationwide coverage of key interventions.9 Setting time-bound targets at national, regional, district, and facility levels in a participatory manner through national TB/HIV coordinating bodies has been instrumental for nationwide scale-up of collaborative TB/HIV activities. Experiences reported by Kenya, Rwanda, and Malawi in setting targets for the accelerated implementation of collaborative activities demonstrated their value and helped to mobilize political commitment from the TB and HIV control programs and funders. PEPFAR targets for TB/HIV have also helped with accountability. Similarly, creating an environment conducive to the development of appropriate policy, operational guidelines, training manuals, and protocols in line with international guidelines has been useful.10 Implementing integrated recording and reporting formats that capture collaborative TB/HIV activities with standardized and harmonized indicators,11 and inclusion of TB components in HIV registers and HIV components in TB registers12 have been crucial to monitoring and evaluating program implementation.
HIV Testing and Counseling of TB Patients and Linkages to HIV Care and Treatment
In the early phase of PEPFAR (2003–2005), there was an urgency to identify PLWH eligible for ART. PEPFAR's target was to place 2 million persons on ART within the first 5-year period. The utility of providing HIV testing in TB clinics was evidenced by seroprevalence surveys among TB patients in southern and east Africa, which showed rates of coinfection with HIV between 50% and 80%.
Initially, incorporating HIV testing of TB patients into routine care was challenging, as the standard of care was voluntary counseling and testing, which involved one-on-one pre- and posttest counseling that could last an hour or more. Introduction of provider initiated testing and counseling (PITC),13 which promoted an “opt-out” strategy in clinical settings and allowed for abbreviated pretest counseling, often in a group setting, was an enormous paradigm shift that promised to streamline the identification of HIV-infected TB patients, so they could receive ART.
PEPFAR support for the early implementation of PITC included assisting with guideline development, modifying recording and reporting systems, procuring test kits, developing linkages to HIV care, and training clinicians. PEPFAR funding supported development of a training-of-trainers implementation package and assignment of the Ministry of Health personnel to provide mentorship and supervision of early rollout initiatives.14 Initially, there were concerns that TB clinic staff would not want to assume this extra work. There were also legislative concerns regarding whether untrained health care workers could provide the abbreviated counseling of PITC, and whether cadres other than laboratory workers could perform the rapid HIV test.
Overall, PEPFAR-supported scale-up of HIV counseling and testing in TB clinics has been enormously successful. In 19 PEPFAR-supported countries in Africa, between 2003 and 2009, HIV testing in TB patients increased from 4% to 61%, compared with testing in non-PEPFAR supported African countries, which increased from 1% to 40%.15 A key component of this successful scale-up was the development of a standard implementation package, which guided countries through the critical steps necessary to rollout this intervention.16 In addition, guidelines for PITC, and monitoring and evaluation further enhanced the ability of these countries to implement this activity. The model of performing HIV testing in the TB clinic and avoiding referral to a voluntary counseling and testing clinic was a vast improvement.17,18 Overall, concerns about TB clinic staff resenting extra duties were not borne out.19 Early adopters of PITC reported successful outcomes. In Kenya, between 2006 and 2009, the proportion of TB patients who underwent HIV testing increased from 60% to 88%.20 Similar findings were seen in Zambia, especially when patients received PITC within TB clinics.21
Linking HIV-infected TB patients to HIV care services has also increased dramatically as a result of PEPFAR support. From 2003 to 2009, in 19 PEPFAR-supported countries in Africa, the proportion of estimated HIV-infected TB patients receiving ART increased from 0.1% to 13.1%, compared with an increase from 0% to 2.7% in non-PEPFAR–supported countries.15 Provision of cotrimoxazole prophylaxis has become routine in TB clinics in many PEPFAR countries once the patients are identified by the system. For example, in 2010, 77% of notified HIV-positive TB patients were provided cotrimoxazole prophylaxis in PEPFAR countries, as compared with 55% in non-PEPFAR countries. However, timely provision of ART to HIV-infected TB patients has been more difficult to operationalize. In 2010, 42% of HIV-positive TB patients in PEPFAR countries received ART, as compared with 34% in non-PEPFAR countries (Fig. 1).
Intensified TB Case Finding
Early identification of PLWH suspected of having TB, followed by a timely diagnostic workup and prompt initiation of treatment can improve patient outcomes and reduce transmission of TB in communities and health care settings.22,23 TB screening is also essential in evaluating PLWH for IPT eligibility by ensuring exclusion of TB to avoid the risk of isoniazid monotherapy.24
PEPFAR-implementing partners have supported the rollout of screening tools for symptoms related to TB for the use in HIV care and treatment settings. Initially, efforts to screen PLWH for TB were inconsistent and nonstandardized, resulting in missed opportunities to identify TB suspects and cases. More recently, WHO has proposed a standard TB screening tool for PLWH based on a meta-analysis,25 which has resulted in substantial improvements in performing and reporting TB screening among PLWH. In 2010, PEPFAR-supported programs reported that 2.9 million PLWH were screened for TB in HIV care or treatment settings.26
An ongoing challenge has been confirming a TB diagnosis among PLWH with a positive symptom screen. With the rollout of new molecular diagnostics, such as GeneXpert MTB/RIF, the impetus for intensified case finding is enhanced as the availability of a rapid diagnostic test represents a quantum leap in patients' access to early and accurate diagnosis, as well as timely and effective treatment. It will be necessary to support national HIV programs and clinicians to ensure that screening tools are adapted and rapidly implemented as part of HIV care and treatment.
TB Infection Control
When PEPFAR was initiated, TB infection control was largely a neglected issue in resource-limited settings, particularly in Africa. An acute awareness of the need for TB infection control came after an outbreak of extensively drug-resistant TB among PLWH in a rural community in KwaZulu-Natal, South Africa, in which 52 of 53 patients died within a median of 16 days: nearly two thirds of these patients were thought to have acquired their infection from a previous hospital admission.27 Furthermore, there was increasing evidence that health care workers in low- and middle-income countries were at substantially higher risk of developing TB than the general population.28 This came at a time when PEPFAR was scaling up HIV care and treatment programs, bringing PLWH into health care settings that lacked TB infection control practices and where TB notification rates were often more than 500 per 100,000.29
In 2006, PEPFAR supported the development of interim guidelines on TB infection control in the context of HIV30 and in 2009, worked with WHO to publish revised policy and guidelines on TB infection control.31 These updated guidelines emphasized the importance of management and oversight of TB infection control activities, as well as the basic approach of administrative and environmental controls and personal respiratory protection.
PEPFAR immediately emphasized the scale-up of TB infection control activities through its technical documents and the country planning process, supporting training of national-level program implementers, engineers, and architects. Support was also provided to develop national TB infection control guidelines32 and to scale-up training of health care workers. PEPFAR funds supported pilot testing of clinic-based infection control initiatives,33 and most recently, the development of a TB infection control implementation package for ART clinics and other outpatient settings,34 which focuses on simple behaviors including identifying, separating, and fast-tracking coughing patients, covering cough with tissues, sleeve, or mask, and keeping windows open where feasible.
Many challenges remain in scaling up TB infection control activities. The need is enormous, and the targeted service settings include more than 13,500 PEPFAR-supported facilities providing care and treatment services for PLWH in high TB prevalence settings. TB infection control measures involve vigilance for multiple, simple behaviors and require ongoing monitoring and supervision. Evaluation of burgeoning programs is of critical importance if gains are to be maintained.
BROADER IMPACT OF PEPFAR SUPPORT OF TB/HIV INTEGRATION
TB Diagnostics and Health Systems Strengthening
Addressing TB among PLWH required significant investment in health systems. Improving TB diagnosis remains a critical challenge and requires improved laboratory services. Support to TB laboratory services through PEPFAR has included (1) educating and enlarging the workforce, (2) improving equipment, supply chains, and specimen referral networks, (3) addressing biosafety concerns, (4) developing laboratory information systems, and (5) supporting and evaluating new diagnostic techniques.35,36 More recently, PEPFAR has promoted comprehensive support to developing quality laboratory systems and building professional linkages through support to the first African Society for Laboratory Medicine. Infrastructure improvements have included renovations of health facilities, laboratories, training schools, and support for the development of national reference laboratories, including TB. PEPFAR support for the establishment of a Field Epidemiology and Lab Training Program in some countries has promoted opportunities for capacity building of national TB program and national reference laboratories staff.
Impact of ART Scale-up on TB Control at the Population Level
ART has the potential to contribute substantially to TB control. In cohort studies conducted in high-income and resource-limited settings, ART is associated with 54%–92% reduction in TB incidence rates, with a pooled summary effect of 67% (95% confidence interval, 61%–73%).37 Important data from 2 PEPFAR-supported countries show a positive impact of ART on TB control at the community level. In South Africa, ART scale-up was found to be associated with a reduced community prevalence of HIV-associated TB38 and in Malawi, with a reduction in the TB notification rate in the general population.39
Several factors have undermined the potential for ART to have an even more substantial impact on TB control. Because ART is typically initiated at low CD4+ counts, many patients have a current TB diagnosis when starting ART.40,41 In addition, low ART coverage and poor retention in care mean that the overall distribution of CD4+ counts in populations may not improve sufficiently to have a more substantial TB preventive effect.
PEPFAR's goal of scaling up ART from 4 to 6 million by the end of 2013 is enabling many countries to increase the threshold for initiating ART to a CD4+ count of <350 cells per microliter. This initiative along with PEPFAR's support of programs to increase HIV counseling and testing, and improve linkage and retention in HIV care may have considerable impact on TB morbidity and mortality, if used synergistically with IPT, intensified case finding, and infection control.42
TB/HIV Integration as a Model for the Larger Global Health Initiative
As programs shift from emergency initiatives to sustainability, lessons learned in the pursuit of TB/HIV collaboration illuminate key principles of the US President's Global Health Initiative.43 Collaborative TB/HIV activities are prototypic of Global Health Initiative's key concepts of coordination, collaboration, integration, and system strengthening. Nascent progress demonstrated over the past 7 years, particularly from TB program entry points, provides guideposts and best practice examples for integration, bridging programmatic cultures, as well as the value of community engagement. Various models of TB/HIV integration have evolved, demonstrating that adaptations must be modified to the contextual milieu of countries.44 It has been documented that integration of TB and HIV services offers real benefits to patients and the health system.9 Programs implementing TB/HIV services also exemplify and enhance the HIV continuum of care model, ensuring that programs link to and between HIV services and other health sector services. Efforts should continue to identify and maximize synergies and benefits across TB and HIV programs, as these activities should be the standard of care for coinfected persons.
ONGOING CHALLENGES TO BE ADDRESSED
Isoniazid Preventive Therapy
IPT has been shown to reduce TB incidence among PLWH45 and has been recommended by WHO as part of a comprehensive package of HIV care.46 Although successful ART substantially reduces TB risk,37 evidence supports an additive protective benefit from concomitant IPT use among individuals on ART.47,48 As such, IPT remains a highly relevant strategy to decrease the burden of TB among PLWH in the context of ART programmatic scale-up.
In many PEPFAR-supported countries, scale-up of IPT has been a challenge. Close to 180,000 PLWH were reported to have received IPT in 2010, representing 12% of the nearly 1.5 million PLWH who were reported to be newly enrolled in HIV care.2 Despite the advocacy of PEPFAR partners, ideological conservatism and the lack of consensus on the part of national HIV and TB program managers have hampered efforts to implement this strategy. A commonly cited barrier to IPT implementation is the concern about emergence of isoniazid resistance because of inadequate patient adherence and difficulty excluding TB before starting IPT,49–51 despite evidence suggesting that the effect of IPT on isoniazid resistance is likely to be small.52 Other implementation hurdles include the absence of standard TB screening algorithms or operating procedures50 and the lack of systems to monitor program implementation.49
A notable exception is Ethiopia, where PEPFAR has supported IPT implementation since 2006. In 2010, 6636 PLWH in Ethiopia received IPT, as compared with 1983 in 2005. Key strategies employed by PEPFAR partners in Ethiopia included sponsoring a national symposium on the management of latent TB infection in PLWH, which led to the development of national guidelines, supporting the development of provider support tools and registers, ensuring availability of isoniazid, and training and mentoring HIV providers.
After the recent release of WHO guidelines on TB screening and IPT among PLWH,46 IPT implementation has begun in several countries. Support is needed to bring these efforts to scale, to approach the Global Plan's target of providing IPT to all those attending HIV care services who are eligible for it by 2015.53
Progress in TB Diagnostics
The lack of simple, accurate, low-cost diagnostic tests for TB is a critical weakness in our ability to tackle the HIV-associated TB epidemic because reliable diagnosis is fundamental for case finding and treatment and for the implementation of IPT. Diagnoses are often missed or delayed due to the nonspecific clinical presentation and high rates of sputum smear negative, extrapulmonary and disseminated disease in PLWH.54,55 Chest radiography has limited utility, and culture-based diagnosis is too slow, costly, and technically complex for most resource-limited settings.
Introduction of the Xpert MTB/RIF assay represents a key breakthrough. This rapid molecular assay can be used close to the point-of-care by operators with little technical expertise, enabling diagnosis of TB and simultaneous assessment of rifampin resistance to be performed within 2 hours using unprocessed sputum samples or specimens from extrapulmonary sites.56 Testing a single sputum sample detects 98%–100% of smear-positive pulmonary TB and between 57% and 83% of smear-negative disease in adults presenting with suspected TB.56
As a critical crosscutting health systems strengthening activity, PEPFAR welcomed WHO's policy statement endorsing the Xpert MTB/RIF assay57 and is committed to supporting scale-up and appropriate use of this new technology.58 As of December 2011, PEPFAR programs procured or budgeted for more than 130 Xpert machines. Additional resources are planned to further accelerate scale-up of this new technology, including procurement of another 100 machines and 300,000 cartridges as well as provision of technical assistance to support their appropriate use. However, significantly greater investment will be needed, if this test is to be placed at peripheral health facilities so that it is as near point-of-care as is feasible, where patients will benefit from this rapid diagnostic.
Early Initiation of ART for HIV-Infected TB Patients
Without ART, case fatality is considerably higher in HIV-infected TB patients than in non-HIV–infected patients. Mortality risk increases as the CD4+ count decreases, and case fatality is highest in the first 2 months of TB treatment.59–62 Key interventions, which include cotrimoxazole prophylaxis and ART, must therefore occur early in TB treatment.
Three randomized controlled studies have demonstrated that earlier initiation of ART (within 2–4 weeks) in HIV-infected TB patients with CD4+ counts <50 cells per microliter is associated with reduced mortality, despite an increased risk of immune reconstitution inflammatory syndrome.63–65 The 2012 WHO Policy on Collaborative TB/HIV Activities recommends that ART should be started within 2 weeks after the onset of TB treatment in PLWH with a CD4+ count <50 cells per microliter and as early as possible in the remaining cases.3
In 2010, only 34% of notified TB cases were HIV tested, and of those who tested HIV positive, only 46% started on ART.2 The priority is to ensure increased ART uptake, and, if CD4+ counts are measured, that ART starts within 2 weeks of TB treatment in those with CD4+ counts <50 cells per microliter. Colocation of TB and ART services is the key to the implementation of this strategy. In this regard, PEPFAR has supported a variety of country models for the provision of dual services to coinfected patients, including initiation of ART within TB clinics.66 The new PEPFAR support for an “AIDS-free generation”, which will strive to more rapidly scale-up timely HIV treatment, will hopefully reduce HIV-related mortality among TB patients and strengthen TB control more broadly.
TB in HIV-Exposed and HIV-Infected Children
Addressing TB among HIV-infected children remains a challenge.67 Underlying immunosuppression and other HIV-related lung diseases complicate the diagnosis of TB, particularly among the youngest children. New diagnostic methods are unlikely to significantly benefit children, as many children do not easily produce sputum, and specimens from children with TB are frequently culture negative even when culture is available.68 Point-of-care diagnostic techniques for all children are needed as is an effective vaccine that can safely be administered to HIV-infected children.69 Despite advances, children lag behind in HIV treatment efforts, and prevention of mother-to-child HIV transmission has not yet been fully scaled up. Opportunities to fully realize linkages across programs include taking full advantage of all routine and HIV service-delivery entry points to screen for TB and HIV in children and ensuring that contact tracing of infectious TB cases occurs. Better routine data gathering efforts of both TB and HIV status in children can direct strategies for program integration and improvement.70
Monitoring and Evaluation
Monitoring and evaluation of collaborative TB/HIV activities has been challenging, as often it requires review of 2 information systems (ie, the National TB surveillance system and the HIV Care patient monitoring system), which are rarely linked and often lack functional feedback loops. PEPFAR must continue to support national programs to transition to HIV/TB linked reporting systems that capture collaborative TB/HIV activities with standardized and harmonized indicators, consistent with WHO recommendations.12 Operational research on improving linkages as well as monitoring and evaluation systems between National TB programs and HIV care and treatment services is a critical need to fully achieve the rewards from the progress made. PEPFAR's new focus on operations research, termed implementation science, promises a welcome addition to the programmatic successes (Table 1).71
TB remains the most significant cause of morbidity and mortality among PLWH in sub-Saharan countries with a high prevalence of both diseases. Working in collaboration with host countries, international partners, and other stakeholders, PEPFAR has supported a comprehensive package of care, which has included interventions to address HIV-related TB. As a result, PEPFAR-supported countries have made significant gains in HIV testing and counseling of TB patients and linkage to HIV care and treatment, intensified TB case finding, and TB infection control. Future programming must address accelerated implementation of IPT, increased access to new TB diagnostics, early initiation of ART for HIV-infected TB patients, and strengthening systems to monitor and evaluate program implementation. Efforts should continue to identify and maximize synergies and benefits across TB and HIV programs, as collaborative TB/HIV activities should be the standard of care for individuals affected by both diseases.
CASE STUDY: RWANDA
Implementation of WHO TB/HIV Policy Guidelines
In Rwanda, a TB/HIV collaborative policy was implemented in 2005,72 and a national coordinating body for TB/HIV activities, the TB/HIV Technical Working Group,73 was established in 2006. The working group, whose members include the National TB Division, National HIV/AIDS Division, National Reference Laboratory, referral and district hospitals, health centers, Global Fund, WHO, USG, and PEPFAR partners, meets quarterly to monitor and plan implementation of TB/HIV activities. At the peripheral level, TB/HIV activities are coordinated through quality improvement teams. One-stop TB/HIV Services have been rolled out nationwide, whereby TB/HIV patients are treated for both TB and HIV at TB clinics until they complete TB treatment.74 Each TB diagnosis and treatment center receives integrated TB and TB/HIV supervision by central and district level teams on a quarterly basis.
In 2009, HIV counseling and testing of TB patients was expanded to include TB suspects.75 In 2010, more than 95% of TB suspects received HIV counseling and testing, more than 95% of HIV-infected TB patients received cotrimoxazole prophylaxis, and more than 65% received ART.76,77
TB screening is offered to PLWH at enrollment in care and during follow-up visits. In July 2011, IPT was introduced in 3 pilot sites. Currently, more than 3300 adults have initiated IPT.77 Scale-up to 10 district hospitals is planned by the end of 2012 and to all remaining hospitals by the end of 2013. TB infection control measures have been implemented at 77% of TB diagnosis and treatment centers.77
Coordination of PEPFAR and Global Fund TB/HIV Activities Under Rwanda Ministry of Health
PEPFAR TB/HIV activities are closely coordinated with those supported by Global Fund and other donors through the Ministry of Health. Ministry of Health, USG, and PEPFAR implementers worked together to develop the TB and HIV National Strategic plans, including their monitoring and evaluation components. During the annual COP process, USG and PEPFAR implementers consider which TB and HIV national strategic plan activities are covered by other funding sources, to avoid duplication of funded activities.
Integration of TB/HIV Monitoring Data
Within health facilities, monitoring and evaluation data related to collaborative TB/HIV activities are primarily captured through integrated paper-based tools (laboratory registers, TB cases register, ART patient file, and TB treatment sheets) that are also used for other TB and HIV data. During the reporting phase, aggregated TB and TB/HIV data are reported in the same paper and electronic formats and are later sent to district and national level for reporting and archiving.
All TB/HIV indicators are monitored through the above-described system. Only 1 indicator related to TB screening among PLWH is reported by the Ministry of Health HIV/AIDS Division; however for integration, these data are shared and discussed during meetings of the TB/HIV technical working group.
CASE STUDY: KENYA
Implementation of 2004 WHO TB/HIV Policy Guidelines
In Kenya, HIV testing for TB patients as an entry point to collaborative TB/HIV activities was introduced in the third quarter of 2005. Over the next several years, interventions have increased to cover all the collaborative activities, due to the availability of policy documents and increased resources for the TB and HIV programs.
The TB program put into place a robust monitoring and evaluation system that included revised data capture tools at the service delivery points to reflect the new policy guidelines. A strong team and committees were formed to steer the implementation, and progress was monitored using the new TB/HIV indicators.
Initially, stigma was a major challenge to TB/HIV integration, both among patients and with health care workers. Special initiatives were put in place to ensure that patients accepted HIV testing in TB clinics, and health care workers were comfortable with testing for HIV.
Between 2005 and 2010, HIV testing of TB patients increased from 32% to 91%, whereas provision of cotrimoxazole for HIV-infected TB patients increased from 81% to 99%. Availability of cotrimoxazole at the TB clinic has enabled its rapid uptake over the years, as staff became more comfortable with implementation of this service after training and mentorship.
ART uptake by HIV-infected TB patients, however, has been challenging, although there are signs of improvement after adoption of 3 models of TB/HIV integration in 2009, based on the available infrastructure, human resources, and policies. In 2010, 48% of HIV-infected TB patients received ART, up from 26% in 2005. The most successful model is the fully integrated clinic where both TB and HIV services are available, followed by partial integration where the patient is referred to a different building within the setting; the least successful is one in which patients must be referred to another facility to access care.
Development of policy documents before initiating the strategy is critical, as they can serve as advocacy tools and provide guidance when challenges arise. Preparation of comprehensive plans at the national level is also critical before rolling out initiatives at the districts. Involvement of patient groups raises awareness and increases acceptability of integrating TB/HIV services. Finally, enabling TB nurses to provide ART in TB clinics was key to successful scale-up of ART for HIV-infected TB patients.
The authors thank Annabel Baddeley of WHO for her support.
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