Antimicrobial Resistance Surveillance and Research Network | This manual describes well accepted methods to carry out drug susceptibility testing on important gram positive and gram negative clinically relevant bacteria. Methods of specimen collection, transport, culture, anti-microbial drug suscept...ibility testing (common, special phenotypic and
molecular techniques) as well as quality control and quality assurance have been described in a concise manner.
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Western Pac Surveill Response J. 2014 Oct-Dec; 5(4): 34–46.
Published online 2014 Dec 18. doi: [10.5365/WPSAR.2014.5.4.007]
This study aimed to understand the patterns of HIV drug resistance in pregnant women in Mozambique. This might help in tailoring optimal regimens for prevention of mother to child transmission of HIV (pMTCT) and antenatal care.
The present Consolidated guidelines include a comprehensive set of WHO recommendations for the treatment and care of DR-TB, derived from these WHO guidelines documents. The consolidated guidelines include policy recommendations on treatment regimens for isoniazid-resistant TB (Hr-TB) and MDR/RR-TB, ...including longer and shorter regimens, culture monitoring of patients on treatment, the timing of antiretroviral therapy (ART) in MDR/RR-TB patients infected with the human immunodeficiency virus (HIV), use of surgery for patients receiving MDR-TB treatment, and optimal models of patient support and care.
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This study consists of a descriptive analysis of M. tuberculosis isolates from Beira Central Hospital, Mozambique, during 2014–2015, being the first report of a genotypic testing used to provide information about second line drug resistance in Mozambique.
BMC Infectious Diseases (2016) 16:423 DO...I 10.1186/s12879-016-1766-x
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PLoS ONE 12(7): e0180996. https://doi.org/10.1371/journal.pone.0180996
A survival guide for clinicans.
3rd edition.
Nature Reviews Microbiology Vol. 17 (2019)pp.51-62
Antimicrobial susceptibility testing (AST) technologies help to accelerate the
initiation of targeted antimicrobial therapy for patients with infections and could potentially
extend the lifespan of current narrow- spectrum antimicrobials. Althoug...h conceptually new and
rapid AST technologies have been described, including new phenotyping methods, digital
imaging and genomic approaches, there is no single major, or broadly accepted, technological
breakthrough that leads the field of rapid AST platform development
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12 countries have a high TB estimated burden with an incidence rate more than 45 per 100 000 population They represent 88 of the cases in the Region
In 2019 the TB case detection gap in the Region was 52 500 cases
La publicación describe el método aplicado en los laboratorios que han realizado la validación, como un método rápido de tamizaje para la detección de resistencia a isoniacida y rifampicina en muestras de esputo de pacientes con tuberculosis pulmonar que aún no hayan iniciado tratamiento anti...tuberculosis, pacientes nunca tratados, recaídas o abandonos recuperados con frotis positivo o negativo.
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The objective of the study was the validation and implementation of GeneXpert MTB/RIF for routine use in the rapid detection of tuberculosis and sensitivity to rifampicin in clinical samples; for this, 1592 respiratory samples were collected and analyzed in the laboratory of Instituto Nacional de In...vestigación en Salud Pública Guayaquil. The analysis of the results of GeneXpert in comparison with smear microscopy showed an initial sensitivity of 99.8% and specificity of 93.2%; The analysis of discrepancies using the results of the culture as a reference method showed that the GeneXpert results considered false negatives turned out to be true negatives, the same happens with the false positives that correspond to true positives. Recalculated the sensitivity and specificity of the GeneXpert was 99.8% and 100% correspondingly. The comparison with the drugs susceptibility test showed a sensitivity of 91.4% and a specificity of 95.5% for the GeneXpert MTB/RIF system. It is concluded that the implementation of the GeneXpert system allows solution to certain problems associated with the application of conventional diagnostic methodologies, decreasing the waiting times, and increasing the sensitivity and specificity in the diagnosis of drug-resistant tuberculosis, thus generating a valuable opportunity for early diagnosis.
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This e-course will guide you through the essentials of latest existing WHO guidelines and policy recommendations on drug-resistant TB. You will also learn more about the rationale behind the WHO recommendations for the management of DR-TB, implementation considerations for different regimens for eli...gible patient groups, adjunctive treatment, the active TB drug safety monitoring and management framework, and the analysis and interpretation of performance indicators.
The main focus of the e-course is programmatic; clinical aspects are only discussed when relevant to specific topics.
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The Practical manual on laboratory strengthening, 2022 update provides practical guidance on implementation of WHO recommendations and best practices for TB laboratory strengthening. It is an updated version of the GLI Practical Guide to Laboratory Strengthening published in 2017 and provides the la...test practical guidance on use of newly recommended diagnostics as well as guidance in key technical areas, including quality assurance and quality management systems, specimen collection and registration, procurement and supply-chain management, diagnostic connectivity, biosafety, data management, human resources, strategic planning, and model algorithms. The key changes are:
inclusion of recent or updated WHO recommendations for tests to diagnose TB and detect drug resistance;
alignment with the latest WHO critical concentrations for phenotypic drug-susceptibility testing (DST) and the new definitions of pre-XDR-TB and XDR-TB;
updated information on building quality-assured TB testing and management capacity using the Stepwise Laboratory Quality Improvement Process Towards Accreditation (SLIPTA) approach (Score-TB package1);
updated information on assessing, analysing and optimising TB diagnostic networks; and
updated information on the use of next-generation sequencing (NGS) to detect mutations associated with drug resistance for surveillance purposes.
The document also provides references to resources and tools relevant for work on laboratory strengthening.
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This brief update on tuberculosis (TB) in the African region covers the state of TB in the WHO African region, strategic priorities and targets and the impact of COVID-19 on essential services. This is followed by key figures for the region, the role of WHO in country support and, recognizing the im...portance of diagnosis and drug susceptibility testing, a focus onstrengthening laboratory networks and the regional laboratory and diagnostic objectives. A brief update of the state of the science and how this is funded across the African region is provided, before closing with challenges and opportunities,strategic directions and a brief discussion of funding concerns. Discussions around the drivers of the disease, and issues of the poverty, inequality and stigma that continue to plague those living with TB are fully recognized, but are outside the scope of this report.
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