Will more sensitive diagnostics identify tuberculosis missed by clinicians? Evaluating Xpert MTB/RIF testing in Guatemala.

OBJECTIVE: To assess the impact of introducing Xpert as a follow-on test after smear microscopy on the total number pulmonary TB notifications. METHOD: Genexpert systems were installed in six departments across Guatemala, and Xpert was indicated as a follow-on test for people with smear-negative results. We analyzed notifications to national tuberculosis (TB) programmes (NTP) and the project's laboratory data to assess coverage of the intervention and case detection yield. Changes in quarterly TB notifications were analyzed using a simple pre/post comparison and a regression model controlling for secular notification trends. Using a mix of project and NTP data we estimated the theoretical yield of the intervention if testing coverage achieved 100%. RESULTS: Over 18,000 smear-negative individuals were eligible for Xpert testing during the intervention period. Seven thousand, one hundred and ninety-three people (39.6% of those eligible) were tested on Xpert resulting in the detection of 199 people with smear-negative, Xpert positive results (2.8% positivity rate). In the year before testing began 1098 people with smear positive and 195 people with smear negative results were notified in the six intervention departments. During the intervention, smear-positive notification remained roughly stable (1090 individuals, 0.7%), but smear-negative notifications increased by 167 individuals (85.6%) to an all-time high of 362. After controlling for secular notifications trends over an eight-quarter pre-intervention period, combined pulmonary TB notifications (both smear positive and negative) were 19% higher than trend predictions. If Xpert testing coverage approached 100% of those eligible, we estimate there would have been a+41% increase in TB notifications. CONCLUSIONS: We measured a large gain in pulmonary notifications through the introduction of Xpert testing alone. This indicates a large number of people with TB in Guatemala are seeking health care and being tested, yet are not diagnosed or treated because they lack bacteriological confirmation. Wider use of more sensitive TB diagnostics and/or improvements in the number of people clinically diagnosed with TB have the potential to significantly increase TB notifications in this setting, and potentially in other settings where a low proportion of pulmonary notifications are clinically diagnosed.

The TB REACH Initiative: Supporting TB Elimination Efforts in the Asia-Pacific.

After many years of TB 'control' and incremental progress, the TB community is talking about ending the disease, yet this will only be possible with a shift in the way we approach the TB response. While the Asia-Pacific region has the highest TB burden worldwide, it also has the opportunity to lead the quest to end TB by embracing the four areas laid out in this series: using data to target hotspots, initiating active case finding, provisioning preventive TB treatment, and employing a biosocial approach. The Stop TB Partnership's TB REACH initiative provides a platform to support partners in the development, evaluation and scale-up of new and innovative technologies and approaches to advance TB programs. We present several approaches TB REACH is taking to support its partners in the Asia-Pacific and globally to advance our collective response to end TB.

A pragmatic approach to measuring, monitoring and evaluating interventions for improved tuberculosis case detection.

The inability to detect all individuals with active tuberculosis has led to a growing interest in new approaches to improve case detection. Policy makers and program staff face important challenges measuring effectiveness of newly introduced interventions and reviewing feasibility of scaling-up successful approaches. While robust research will continue to be needed to document impact and influence policy, it may not always be feasible for all interventions and programmatic evidence is also critical to understand what can be expected in routine settings. The effects of interventions on early and improved tuberculosis detection can be documented through well-designed program evaluations. We present a pragmatic framework for evaluating and measuring the effect of improved case detection strategies using systematically collected intervention data in combination with routine tuberculosis notification data applying historical and contemporary controls. Standardized process evaluation and systematic documentation of program implementation design, cost and context will contribute to explaining observed levels of success and may help to identify conditions needed for success. Findings can then guide decisions on scale-up and replication in different target populations and settings.

Review of the national tuberculosis programme in Romania

Romania has the highest incidence of TB in the European Union (EU)/European Economic Area (EEA),representing one quarter of the EU/EEA TB burden. A review of the national TB programme in Romaniawas jointly organized by the WHO Regional Office for Europe and the European Centre for DiseasePrevention and Control, with WHO leading all operations, from 10 to 21 March 2014. The reviewacknowledged the high rates of detection and treatment success achieved among patients with drugsusceptibleforms of TB; it also pointed to the large proportion of patients with multidrug-resistant TB whoare not detected or are poorly treated. The review identified major challenges to be addressed atprogramme level as well as at health system level and gave the Ministry of Health and the national TBprogramme 14 main recommendations for improvement.

Обзорная оценка Национальной программы по туберкулезу в Республике Молдова: 4–15 февраля 2013 года

Республика Молдова входит в число 18 приоритетных стран для борьбы с туберкулезом (ТБ) в Европейском регионе ВОЗ и 27 стран мира с высоким бременем ТБ с множественной лекарственной устойчивостью (МЛУ-ТБ). Согласно классификации Глобального фонда для борьбы со СПИДом, туберкулезом и малярией, Республика Молдова занимает второе место среди 110 стран по уровню средств, выделяемых на душу населения. Вторая фаза реализации консолидированного гранта в рамках раундов 8 и 9 была одобрена в декабре 2012 года с условием представления на следующем этапе обзорной оценки Национальной программы по туберкулезу и стратегического плана (на основе этой обзорной оценки) по усилению приверженности лечению и снижению числа пациентов, результаты лечения которых неизвестны. Серьезную озабоченность вызывал тот факт, что, как показала оценка, осуществление мер вмешательства и поддержка оказали лишь ограниченное воздействие на улучшение результатов лечения. В октябре 2012 года Министерство здравоохранения обратилось в Европейское региональное бюро ВОЗ с просьбой обеспечить координацию обзорной оценки Национальной программы по туберкулезу.

Review of the National Tuberculosis Programme in the Republic of Moldova: 4–15 February 2013

The Republic of Moldova is among the WHO European Region’s 18 high-priority countries for tuberculosis (TB) control and among the world’s 27 high multidrug-resistant TB (MDR-TB) burden countries. The Global Fund to Fight AIDS, Tuberculosis and Malaria ranks the Republic of Moldova second among 110 countries by level of funds provided per capita. The second phase of implementation of its consolidated Round 8 and 9 TB grant was approved in December 2012 with a request to submit, at a later stage, a review of the National TB Programme and a strategic plan (based on the review) to improve treatment compliance and reduce loss to treatment follow up. A major concern highlighted was that supported interventions have shown only a limited impact in improving treatment success. In October 2012 the Ministry of Health asked the WHO Regional Office for Europe to coordinate the review of the National TB Programme.The review took place from 4 to 15 February 2013. Twelve international and seven national experts participated, visiting 18 districts and three municipalities, the autonomous region of Gagauzia and the Transnistria region. The review team developed a strategic plan to improve treatment compliance and reduce loss to treatment follow up immediately after the review; this appears as part of the roadmap attached to this report (Annex 1). The team members conveyed their key findings and recommendations at the end of the mission to the Minister of Health.