Since the World Health Organization (WHO) launched the Global Antimicrobial Resistance Surveillance System (GLASS) in 2015, there has been rapidly growing awareness among many African countries that they need to be doing more to combat antimicrobial resistance (AMR). The Africa Centres fo...r Disease Control and Prevention (CDC) was officially inaugurated in January 2017 and will support countries commencing surveillance for serious infectious disease threats in Africa, including resistance. Review of the recent WHO GLASS report suggests that, while certain nations do have some surveillance systems in place, very few countries in Africa currently conduct effective routine surveillance.
African Journal of Laboratory MedicineISSN: (Online) 2225-2010, (Print) 2225-2002
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Limited coverage of laboratory services and long turnaround times from real-time reverse transcription-polymerase chain reaction (rRT-PCR) for the detection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has been insufficient to meet the demands in many African countries in response... to the COVID-19 pandemic. Rapid antigen diagnostic tests (AgRDTs) are potentially useful as they can inform healthcare workers and individuals of their infection status at point-of-care testing
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HAT diagnosis relies on laboratory techniques because clinical signs and symptoms are unspecific. Serodiagnostic tests exist only for Tbg and are based on the detection of specific antibodies, thus they are not confirmatory of infection. With the current low disease prevalence, the positive predicti...ve value of serological tests is particularly low. Field-applicable tools include the card agglutination test for trypanosomiasis (CATT) used mainly in active screening by specialized mobile teams, and the rapid diagnostic tests that are more suitable for individual testing at point-of-care. Confirmation of Tbg infection requires microscopic examination of body fluids necessitating specific training. The best performing methods are laborious and reach 85–95% diagnostic sensitivity when performed by skilled personnel.
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HAT diagnosis relies on laboratory techniques because clinical signs and symptoms are unspecific. Serodiagnostic tests exist only for Tbg and are based on the detection of specific antibodies, thus they are not confirmatory of infection. With the current low disease prevalence, the positive predicti...ve value of serological tests is particularly low. Field-applicable tools include the card agglutination test for trypanosomiasis (CATT) used mainly in active screening by specialized mobile teams, and the rapid diagnostic tests that are more suitable for individual testing at point-of-care.
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Protocol for laboratory diagnosis of COVID_19, in the framework of the health emergency
To meet the need for laboratory diagnosis to be integrated in community care, the new 2022 Update describes point-of-care tests that can be performed both in district laboratories and peripheral healthcare facilities by non-specialist staff. Also included are recently developed self-tests.
This training toolkit by the European Laboratory Initiative for TB, HIV and Viral Hepatitis provides a unique combination of practical guidance and expert advice on the interpretation of selected WHO-endorsed tests for drug-resistant tuberculosis (DR-TB).
The latest update (28 January 2021) includes the following addition and revision:
biosafety aspects for working with antigen-detecting rapid diagnostic test;
handling new variants of SARS-CoV-2 in the laboratory;
updated assay decontamination before disposal;
personal protectiv...e equipment (PPE) for specimen collection;
addressing chemical hazards and their safe disposal; and
the fourth edition of the WHO Laboratory Biosafety Manual (LBM4) is now available and the terminology in this guidance was aligned with the LBM4.
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Stop TB`s GDF provides a wide range of diagnostic equipment and laboratory supplies in its Diagnostics Catalog
This online training is based on the Global Laboratory Initiative’s “Guide for providing technical support to TB laboratories in low- and middle-income countries”. This guide is intended to familiarize those who are providing technical assistance to TB laboratories in low- and middle-income co...untries with WHO recommendations and international best practices.
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O recente aumento dos casos de microcefalia e outras patologias neurológicas potencialmente associadas à infecção pelo vírus Zika provocou um aumento da procura de testes laboratoriais para detectar a infecção. Os grupos prioritários para os testes de diagnóstico devem ser
indivíduos sin...tomáticos e mulheres grávidas assintomáticas com possível exposição ao vírus Zika. O presente documento fornece orientações sobre as actuais estratégias de testes da infecção pelo vírus Zika. Este documento será revisto e actualizado à medida que surgirem novas informações.
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This manual is to assist health care providers and laboratory scientists to diagnose mycobacterium ulcerans disease (Buruli ulcer). The manual aims to achieve a better understanding of the clinical presentation and its diagnosis. The methods described are tailored to various levels of care and avail...able resources to improve the diagnosis and surveillance of the disease.
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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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Practical guide for doctors, nurses,laboratory technicians, medical auxiliaries,water and sanitation specialists and logisticians.
The document is a comprehensive guide for managing cholera epidemics, providing detailed protocols for prevention, outbreak investigation, treatment, and control mea...sures. It covers essential aspects like rehydration therapy, water sanitation, hygiene promotion, and setting up treatment centers. Designed for medical and non-medical staff, it aims to support effective epidemic response and reduce cholera-related morbidity and mortality.
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How does environmental health services work with epidemiology and laboratory professionals to protect public health? Learn how environmental health services answer how and why a disease occurs, recommend actions to stop outbreaks and prevent future ones, and shield hosts from harmful agents through ...environmental controls.
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This manual is to assist health care providers and laboratory scientists to diagnose mycobacterium ulcerans disease (Buruli ulcer). The manual aims to achieve a better understanding of the clinical presentation and its diagnosis. The methods described are tailored to various levels of care and avail...able resources to improve the diagnosis and surveillance of the disease.
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The latest update (28 January 2021) includes the following addition and revision:
biosafety aspects for working with antigen-detecting rapid diagnostic test;
handling new variants of SARS-CoV-2 in the laboratory;
updated assay decontamination before disposal;
personal protectiv...e equipment (PPE) for specimen collection;
addressing chemical hazards and their safe disposal; and
the fourth edition of the WHO Laboratory Biosafety Manual (LBM4) is now available and the terminology in this guidance was aligned with the LBM4.
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This document provides countries with recommendations for structuring a public health entomology laboratory network. The document will help countries to identify their areas of need and determine how the entomology network can be strengthened, especially in the context of a decentralized health syst...em. The recommendations also consider the different degrees of development and different entomological research needed to support disease prevention and control activities.
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The Schistosomiasis Resource Center at the Biomedical Research Institute is a unique schistosomiasis research supply laboratory funded by the NIAID (NIAID-NIH)
The SRC provides Schistosoma life cycle reagents free of charge to scientists, students, biotech and independent investigators in the U.S.... and around the worl
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The Government of the Democratic Republic of the Congo announced today that preliminary laboratory results indicate a cluster of cases of Ebola virus in North Kivu province. The announcement was issued little more than a week after the Ministry of Health declared the end of an outbreak in Equateur P...rovince in the far western part of the country, some 2500 km from North Kivu.
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