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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Version 4
The purpose of these standard operating procedures (SOPs) is to offer policy guidance and to provide performance standards on how to respond to any type of poliovirus outbreak or event in a timely and effective manner, and specifically, to stop an outbrea...k within 120 days.
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16 Dec. 2020
This document provides guidance to Ministries of Health (MOHs), laboratory personnel and implementing partners in African Union Member States on the application of rapid antigen tests to COVID-19 testing. The guidance serves as reference for policymakers, laboratory leads, implementing... partners, and experts on use case scenarios and associated testing algorithms for COVID-19 antigen tests. It recommends the use of antigen tests to increase access to testing and enable timely results for persons with or without symptoms in specific settings. The document will be reviewed and updated as more evidence becomes available regarding the use of rapid antigen tests for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from global studies and evaluation efforts.
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Prepared as an outcome of ICMR Expert Group on Immunophenotyping of Hematolymphoid Neoplasms | Coordinated by Division of Non Communicable Diseases | This document addresses on various issue related to good quality practices in laboratory work up of flow cytometric immunophenotyping and will be of u...se to pathologists, cytometrists, hematologists, technologists and scientists working in this field.
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Buruli ulcer is caused by infection with Mycobacterium ulcerans. The disease is reported in more than 33 countries worldwide, but only about half of these countries regularly report data to WHO; most cases are reported from subregions of West and Central Africa. The mode of transmission is not known....
About half of those affected are children aged under 15 years; there is no gender difference. Diagnosis is based mainly on clinical and epidemiological characteristics. Of the four methods used for laboratory confirmation (microscopy, polymerase chain reaction (PCR), histopathology and culture), PCR is the most rapid and widely used. Other rapid methods for detection of mycolactone in lesions from suspected cases, such as fluorescent thin-layer chromatography, are under evaluation in four countries in Africa.
Research to develop point-of-care tests is in progress. Treatment of Buruli ulcer comprises 8 weeks of combined antibiotics (rifampicin and clarithromycin). Complementary therapies such as wound care, skin graft and prevention of disability are needed in some cases to ensure full recovery.
The target set by the World Health Organization (WHO) for control of Buruli ulcer is for countries to achieve a rate of case confirmation by PCR of at least 70%. All endemic countries have at least one PCR facility to support confirmation of cases. However, most countries in the WHO African Region have not been able to reach the target, and the rate of case confirmation has been declining
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Following review of evidence and advice from the Technical Advisory Group (TAG) on Tuberculosis (TB) Diagnostics and Laboratory Strengthening, the World Health Organization (WHO) announces that current WHO recommendations for the use of interferon-gamma release assays (IGRA) are also valid for Beij...ing Wantai’s TB-IGRA and Qiagen QuantiFERON-TB Gold Plus products. This expands the range of tests available to detect TB infection. Full details are provided in this WHO policy statement.
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This policy guideIine is intended for use by healthcare professionals invoIved in the management of Covid-19 in South Africa. The document provides guidance on diagnostic tests available, on antigen test performance and accessibility. 1t focuses on key issues such as when to
Perform antigen tests... how to use and interpret results. Capturing and reporting testing information is also covered.
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The document "Priority medical devices list for the COVID-19 response and associated technical specifications" complements this guideline.
This document provides interim guidance on the quality, performance characteristics and related standards of personal protective equipment (PPE) to be used i...n the context of COVID-19. This includes WHO Priority Medical Devices, specifically: surgical masks, non-surgical masks, gloves, googles, face shields, gowns and N95 masks. It is intended for procurement agencies, occupational health departments, infection prevention and control departments or focal points, health facility administrators, biomedical and materials engineering, PPE manufacturers and public health authorities at both national and facility levels.
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L’évaluation externe de la qualité (EEQ) est une composante importante des systèmes qualité des services de transfusion sanguine. L’EEQ est l’évaluation externe de la qualité générale des résultats obtenus par un laboratoire dans l’analyse d’échantillons de contrôle dont le cont...enu est connu, mais n’a pas été dévoilé, et la comparaison de ces résultats avec ceux qu’ont obtenus d’autres laboratoires qui ont analysé les mêmes échantillons. Dans les laboratoires qui pratiquent le dépistage des infections transmissibles par transfusion (ITT) dans les dons de sang, la participation à l’EEQ aide à surveiller et améliorer la qualité des résultats. Les informations issues de l’EEQ permettent d’améliorer continuellement la qualité en mettant en évidence les erreurs d’un laboratoire et d’appliquer des mesures pour éviter qu’elles se reproduisent. L’EEQ joue ainsi un rôle essentiel dans l’amélioration de la sécurité transfusionnelle.
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The overall objective of this implementation plan is to define the strategy for implementation of the Xpert MTB/RIF test for rapid detection of TB and rifampicin (RIF) resistance in Tanzania, within the context of the National Tuberculosis and Leprosy Programme (NTLP) strategic plan and other nation...al health guidelines. It is intended to serve as the main guiding document for national, regional and local programme managers, clinicians, coordinators, laboratory staff and other health workers; national and regional reference laboratories; local and international implementing partners; and donors involved in TB control.
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The main objective of this self learning programme is to understand the purpose of biostatistics through realistic cases and to acquire basic biostatistics skills that can be applied to your work.
The target audiences of this training are medical and biomedical students, laboratory specialists and ...other professionals who need to use or understand basic biostatistics. However, it may also be a helpful reminder to epidemiologists.
module.
You can order the biostatistics CD-ROM free of charge by sending an e-mail to: ihrinfo@who.int
Download the contents of the Biostatistics CD-ROM free of charge [zip 9.64MB]
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Mosby’s Pocket Guide to Nursing Skills and Procedures, eighth edition, is
a practical, portable reference for students and practitioners in the
clinical setting. Grouped alphabetically, 85 commonly performed skills
are presented in a clear, step-by-step format that includes:
■ Purpose for pe...rforming each skill
■ Guidelines to help students in delegating tasks to assistive
personnel
■ List of equipment required
■ Rationales to explain why specific techniques are used
■ Full-color photographs and drawings to provide visual
reinforcement
In addition, Safety Alerts are included in the skills to highlight important
information about patient safety and effective performance.
Current Standard Precautions guidelines from the Centers for Disease
Control and Prevention are incorporated throughout. Preprocedure
and postprocedure protocols are conveniently located on the inside
back cover.
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This survey is part of a series of eight country surveys conducted in the context of the People that Deliver Initiative (peoplethatdeliver.org). This global initiative, which brings together the world’s largest organizations, aims to improve health services performance through the professionalizat...ion of logistics managers.
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This resource consists of technical guidelines for District Medical Officers, counselors and laboratory technicians for second-line antiretroviral therapy drugs, operational guidelines for pilot roll-out in two centres and laboratory guidelines for viral-load testing and standard operating procedure...s.
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An Indicator-based Approach - This manual presents an indicator-based approach for rapidly assessing pharmaceutical management systems and programs. The manual contains a set of 46 indicators of performance, grouped under eight topics of pharmaceutical management, with each topic being covered by a ...subset of indicators. Thirty-four of the indicators are quantitative, that is, expressed as numbers. Twelve are qualitative, in that they describe the presence or absence of a policy or management system, and in some cases, the degree of implementation.
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Ce document fournit des orientations provisoires sur la qualité, les caractéristiques de performance et les normes connexes des équipements de protection individuelle (EPI) à utiliser dans le contexte de COVID-19. Il s'agit notamment des dispositifs médicaux prioritaires de l'OMS, à savoir : l...es masques chirurgicaux, les masques non chirurgicaux, les gants, les lunettes de protection, les écrans faciaux, les blouses et les masques N95. Il est destiné aux organismes d'approvisionnement, aux services de santé au travail, aux services ou points focaux de prévention et de contrôle des infections, aux administrateurs d'établissements de santé, aux ingénieurs biomédicaux et des matériaux, aux fabricants d'EPI et aux autorités de santé publique, tant au niveau national qu'au niveau des établissements.
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Le Cameroun conduit actuellement une évaluation d’impact à grande échelle pour étudier les effets du Financement basé sur la Performance sur les résultats de santé dans le contexte spécifique du Cameroun. Bien que l’évaluation d’impact repose largement sur l’analyse quantitative à ...partir d’enquêtes de base et finale, l’équipe de l’évaluation d’impact a proposé d’introduire une composante qualitative à l’évaluation globale pour creuser en profondeur afin d’obtenir des explications ou explorer des questions spécifiques relatives à l’expérimentation du PBF au Cameroun. Les rôles de la recherche qualitative en lien avec l’évaluation de l’impact du PBF sont nombreux : (i) identifier les problèmes inhérents au contexte camerounais; (ii) élaborer des mesures quantitatives pertinentes; (iii) investiguer les questions importantes plus en profondeur et de manière détaillée; (iv) comprendre le rôle du lieu, du moment, des pratiques et des processus et; (v) améliorer l’interprétation des résultats quantitatifs.
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Under-diagnosis of asthma in ‘under-fives’ may be alleviated by improved inquiry into disease history. We assessed a questionnaire-based screening tool for asthma among 614 ‘under-fives’ with severe respiratory illness in Uganda. The questionnaire responses were compared to post hoc consensu...s diagnoses by three pediatricians who were guided by study definitions that were based on medical history, physical examination findings, laboratory and radiological tests, and response to bronchodilators. Children with asthma or bronchiolitis were categorized as “asthma syndrome”. Using this approach, 253 (41.2%) had asthma syndrome. History of and present breathing difficulties and present cough and wheezing was the best performing combination of four questionnaire items [sensitivity 80.8% (95% CI 77.6–84.0); specificity 84.7% (95% CI 81.8–87.6)]. The screening tool for asthma syndrome in ‘under-fives’ may provide a simple, cheap and quick method of identifying children with possible asthma. The validity and reliability of this tool in primary care settings should be tested.
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WHO has a unique combination of technical public health and scientific expertise, and a global operational footprint, with field offices in more than 150 countries. In 2020, this global, technical, and operational reach meant WHO was able to support countries around the world in every aspect of COVI...D-19 public health response, from surveillance and laboratory testing to maintaining essential health services in the most vulnerable and fragile contexts.
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Snakebite envenoming affects millions of people worldwide annually and is a significant source of mortality. Preventing and treating the problem is complex and requires collaboration among the fields of public health, medicine, ecology, and laboratory science. After being removed from the category A... neglected tropical disease (NTD) list in 2013, snakebite envenoming was reinstated in 2017 in response to antivenom shortages and advocacy from researchers and international NGOs. In 2019, the World Health Organization (WHO) set a target to halve the number of deaths and cases of snakebite envenoming by 2030.
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