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A total of 18 laboratories from 13 countries participated in the four rounds of EQA: 10 laboratories from eight African endemic countries, four of which participated in all four rounds and three in three rounds. The overall results showed that the median performance of these laboratories improved ov
...
er the four rounds. However, the proportion of laboratories reporting false–positive cases remains high and indicates a problem of specificity probably due to contamination. The proportion of laboratories reporting both false–positive and false–negative results raises the issue of the quality of the data reported by WHO in Africa as well as the results of the studies carried out in these different laboratories in various countries.
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18 Janaury 2021
EU/EEA Member States and the UK have increased their laboratory capacity tremendously over the past 11 months as the majority of the Member States reported sufficient testing capacity until March 2021.
Many countries are ad
...
ding rapid antigen detection tests (RADT) to their testing strategies in order to reduce pressure on RT-PCR testing.
Some Member States have already included RADT in their case definition.
The main bottlenecks, such as shortages of laboratory consumables and human resources, as well as sample storing facilities, continue to exist and may affect the overall laboratory response to COVID-19.
more
28 January 2021. The purpose of this document is to provide interim guidance on laboratory biosafety related to the testing of clinical specimens of patients.
Laboratory Biossafety Manual
Laboratory Biossafety Manual
Laboratory Biossafety Manual
Laboratory testing for the monkeypox virus
recommended
Any individual that meets the suspected case definition of monkeypox should be offered testing in appropriately equipped laboratories by staff trained in the relevant technical and safety procedures. Confirmation of monkeypox virus infection is based on nucleic acid amplification testing (NAAT), usi
...
ng real-time or conventional polymerase chain reaction (PCR), for detection of unique sequences of viral DNA. PCR can be used alone, or in combination with sequencing. The recommended specimen type for laboratory confirmation of monkeypox is skin lesion material, including swabs of lesion surface and/or exudate, roofs from more than one lesion, or lesion crusts.
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This document provides interim guidance to countries on testing considerations and strategies for suspect cases of severe acute hepatitis of unknown aetiology in children. It is primarily intended for clinical, programmatic, laboratory and diagnosti
...
c stakeholders across Member States and national public health authorities involved in the identification and investigation of cases of severe acute hepatitis in children.
This document is part of a package of guidance for this event, which includes suggested minimum reporting variables and a clinical Case Report Form support Member States with case investigation and reporting.
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Dengue is a significant public health problem. There are four dengue virus serotypes identified; however, its diagnosis is difficult due to the existence of many viruses, bacteria, and parasites producing the same clinical presentation, being present in the same geographical area and even producing
...
coinfections. Therefore, determining whether a person has, had, or is infected with dengue virus is of great importance. In order to do so, direct and indirect laboratory tests have been developed to identify the virus or part of its structure that generally detects the antibody response. These techniques are used for diagnosis, epidemiological studies, monitoring, assessment and production of vaccines and antivirals, etc. They range from the use of cell cultures, animal models, inoculation by insects, and serology tests to the use of detection molecular tests and quantification of genetic material that are described in this chapter herein, a brief explanation of this methodology, its strengths and weaknesses, and its application in the dengue research.
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Rabies has an enormous impact on both agriculture and conservation biology, but its greatest burden is undeniably on public health. As such, routine methods for rapid risk assessment after human exposures to rabies as well as applications for laboratory
...
-based surveillance, production of biologicals and management of this infectious disease are critical. Given its mandate to improve human health and control disease among its Member States, WHO has led the production of this fifth edition of Laboratory techniques in rabies.
more
Rabies has an enormous impact on both agriculture and conservation biology, but its greatest burden is undeniably on public health. As such, routine methods for rapid risk assessment after human exposures to rabies as well as applications for laboratory
...
-based surveillance, production of biologicals and management of this infectious disease are critical. Given its mandate to improve human health and control disease among its Member States, WHO has led the production of this fifth edition of Laboratory techniques in rabies.
more
This updated manual provides a basic understanding of the principles of laboratory and point-of-care (POC) testing in the context of screening and diagnostic approaches, as well as antimicrobial susceptibility testing, as components of sexually tran
...
smitted infections (STIs) control. As with previous editions, this manual covers each disease in a separate chapter which provides detailed information on specimen collection, transport and laboratory testing. Two useful annexes covering media, reagents, diagnostic tests and stains (recipes) and laboratory supplies are included at the end of the manual.
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This document provides detailed guidance on laboratory testing for suspected diphtheria cases during significant outbreaks or in low-resource settings. It aims to supplement and build on other existing WHO guidance documents on surveillance standard
...
s, diagnostics and research on Corynebacterium by providing key considerations for laboratories that allow the rationalization and optimization of testing during outbreaks. The recommendations given here have been prepared by WHO in consultation with, and reviewed by, global experts with experience in laboratory analysis of Corynebacterium species and in outbreak settings, or with expertise in developing new technologies for diphtheria research and diagnosis. Unless otherwise stated, the considerations provided apply to diphtheria outbreaks caused by toxin-producing C. diphtheriae with a classical respiratory diphtheria presentation.
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Laboratory manual for yellow fever
recommended
This WHO laboratory manual provides the most up to date methods and procedures for the laboratory identification of yellow fever virus infection in humans. It provides guidance on the establishment
...
and maintenance of an effective laboratory providing routine surveillance testing for yellow fever, which operates within the WHO coordinated Global Yellow Fever Laboratory Network (GYFLaN) capable of providing confirmation of yellow fever infection reliably and timely. This second edition supersedes the first edition of the 2004 WHO manual for the monitoring of yellow fever virus infection.
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Determination of Parasitemia and Lifecycle
This guidance synthesizes current evidence on dengue laboratory testing and diagnostics and provides practical recommendations for laboratories, clinicians, public health officials, and programme managers involved in dengue diagnosis, surveillance,
...
and control, in the context of the global emergency. It includes a diagnostic algorithm for suspected cases, outlining appropriate testing methods based on days post symptom onset.
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Surveillance of influenza virus infection at the European level requires close collaboration between virologists, epidemiologists and sentinel GP networks to generate the data necessary to inform a timely public health response.
The WHO Laboratory Biosafety Manual (LBM) has been in broad use at all levels of clinical and public health laboratories, and other biomedical sectors globally, serving as a de facto global standard that presents best practices and sets trends in bi
...
osafety.
The LBM4 suite consists of one core document and 7 subject-specific monographs which were developed in order to accommodate diverse interests and requests for learning more specific details, supplementing the core document. Readers are encouraged to start with the core document and learn the subject explained in each monograph accordingly.
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