WHO has developed a clinical case definition of post COVID-19 condition by Delphi methodology that includes 12 domains, available for use in all settings. This first version was developed by patients, researchers and others, representing all WHO regions, with the understanding that the definition ma...y change as new evidence emerges and our understanding of the consequences of COVID-19 continues to evolve.
Post COVID-19 condition occurs in individuals with a history of probable or confirmed SARS CoV-2 infection, usually 3 months from the onset of COVID-19 with symptoms and that last for at least 2 months and cannot be explained by an alternative diagnosis. Common symptoms include fatigue, shortness of breath, cognitive dysfunction but also others and generally have an impact on everyday functioning. Symptoms may be new onset following initial recovery from an acute COVID-19 episode or persist from the initial illness. Symptoms may also fluctuate or relapse over time.
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WHO has developed this manual in order to strengthen the laboratory diagnosis and virological surveillance of influenza infection.
The provision of safe and efficacious blood and blood components for transfusion or manufacturing use involves a number of processes, from the selection of blood donors and the collection, processing and testing of blood donations to the testing of patient samples, the issue of compatible blood and ...its administration to the patient. There is a risk of error in each process in this “transfusion chain” and a failure at any of these stages can have serious implications for the recipients of blood and blood products. Thus, while blood transfusion can be life-saving, there are associated risks, particularly the transmission of bloodborne infections.
Screening for transfusion-transmissible infections (TTIs) to exclude blood donations at risk of transmitting infection from donors to recipients is a critical part of the process of ensuring that transfusion is as safe as possible. Effective screening for evidence of the presence of the most common and dangerous TTIs can reduce the risk of transmission to very low levels.
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Bull World Health Organ 2017;95:594–598
WHO’s sentinel surveys of acquired HIV resistance to dolutegravir among people receiving dolutegravir-containing antiretroviral therapy is intended for easy and frequent implementation. Results from sentinel surveys provide insight into the prevalence and year-over-year trends of dolutegravir resi...stance in adults, children and adolescents receiving dolutegravir-based ART.
This sentinel method is implemented complementary to WHO-recommended methods for estimating nationally representative levels of acquired HIV drug resistance.
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WHO published guidance for clinicians and health care decision-makers on the use of corticosteroids in patients with COVID-19.
We recommend systemic corticosteroids for the treatment of patients with severe and critical COVID-19. We suggest not to use corticosteroids in the treatment of patients ...with non-severe COVID-19 as the treatment brought no benefits, and could even prove harmful. Treatment should be under supervision of a clinician.
Corticosteroids are listed in the WHO model list of essential medicines, readily available globally at a low cost. WHO encourages countries to maintain sufficient stocks of corticosteroids to treat COVID-19 and the other disease for which they are effective, while not maintaining excessive stocks which could deny other countries access.
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This Quick Reference Handbook of Selected Congenital Anomalies and Infections is a companion tool to Birth defects surveillance: a manual for programme managers, and is intended for use by front-line health care professionals who are diagnosing and collecting data on congenital defects and infection...s. When used in conjunction with the manual, the tools in this handbook will help the reader to: identify an initial list of congenital anomalies to consider for monitoring;describe the tools needed to define and code identified cases; define specific congenital anomalies under surveillance.
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The WHO Guide on Oral Cholera Vaccines in Mass Immunization Campaigns provides guidance on the planning and implementation of oral cholera vaccine (OCV) campaigns. It covers key aspects such as when and where to use OCVs, vaccine specifications, and recommendations for use in endemic areas, outbreak... settings, and complex emergencies. The document outlines steps for macro- and micro-planning, logistics, budgeting, human resource allocation, and risk communication. It also highlights challenges, including cold chain management, vaccine supply, and community engagement, ensuring that vaccination campaigns are efficient and effective in reducing cholera outbreaks.
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WHO’s antiretroviral treatment (ART) clinic-based acquired drug resistance survey method yields robust estimates of HIV viral suppression and acquired HIV drug resistance in adults, children and adolescents taking both dolutegravir and non-dolutegravir based regimens.
Results are used to inform A...RT programme decision making regarding optimal ART regimens and support evaluation of programme quality with respect to maximizing viral load suppression and minimizing emergence of resistance in people taking ART.
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Toolkit
HIV Treatment and Care
The WHO South-East Asia (SEA) Region bears a high burden of tuberculosis (TB) and MDR-TB. In 2015, the Region accounted for nearly 200 000 or 35% of the global estimated new RR/MDR-TB cases eligible for treatment. Extensively drug-resistant TB (XDRTB) has also been reported from s...ix countries of the SEA Region. MDR-TB could potentially replace drug-susceptible TB, and constitutes a threat to global public health security. The South- East Asia Regional Response Framework for DR-TB 2017–2021 complements the Ending TB in the South-East Asia Region: Regional Strategic Plan 2016–2020” and outlines key strategies for reducing morbidity, mortality and transmission of DR-TB.
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The extensive use of natural resources threatens to exceed the carrying capacity of the Earth. The concept of a
circular economy offers an avenue to sustainable growth, good health and decent jobs, while saving the environment
and its natural resources. Further, the change from a linear economy (t...ake, make, dispose) to a circular economy (renew, remake, share) is expected to support significantly the attainment of the Sustainable Development Goals
(SDGs), particularly SDG 12 on responsible consumption and production.
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