The WHO continuously reviews available data on SARS-CoV-2 variants of concern. For this version, the global epidemiological
situation of the COVID...-19 pandemic as of 21 January 2022 – at a time when the Omicron VOC had been identified in 171
countries across all six WHO Regions and was rapidly replacing Delta worldwide – was considered Omicron has a substantial growth advantage, higher secondary attack rates and a higher observed reproduction number than Delta.
There is now significant evidence that immune evasion contributes to the rapid spread of Omicron. Other factors may be a shorter
serial interval (by about 0.8 to 1.2 days compared to Delta) and potential increased intrinsic transmission fitness . There is
growing evidence that with Omicron, there is lower vaccine effectiveness (VE) against infection and symptomatic disease soon after vaccination compared to Delta. There is also evidence of accelerated waning of VE over time of the primary series against infection and symptomatic disease for the studied vaccines. Further studies are required to better understand the drivers of transmission and declining incidence in various settings. These factors include the intrinsic transmission fitness properties of the virus, degree of immune evasion, vaccination coverage and level of vaccine-derived and post-infection immunity, levels of social mixing and degree of application of public health and social measures (PHSM).
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Since the last situation report on the multi-country outbreak of cholera was published on 1 June 2023 (covering data reported until 15 of May), no new country reported a cholera outbreak. In total, ...24 countries have reported cases since the beginning of 2023. The WHO African Region remains the most affected region with 14 countries reporting cholera cases since the beginning of the year. The overall capacity to respond to the multiple and simultaneous outbreaks continues to be strained due to the global lack of resources, including shortages of the Oral Cholera Vaccine (OCV) and cholera supplies, as well as overstretched public health and medical personnel, who are dealing with multiple parallel disease outbreaks and other health emergencies. Based on the large number of outbreaks and their geographic expansion, as well as a lack of vaccines and other resources, WHO continues to assess the risk at global level as very high.
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The conduct of COVID-19 vaccine trials in the context of a candidate vaccine being issued with Emergency Use Designation raises challenging ethical questions, including in relation to the use ...class="attribute-to-highlight medbox">of placebo controls and unblinding of trial participants in current and future COVID-19 vaccine trials. This policy brief was developed by the WHO Access to COVID-19 Tools (ACT) Accelerator Ethics & Governance Working Group, to provide guidance for researchers, sponsors, regulators, research ethics committees, and policy-makers, on these and related issues.
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The World Health Organization (WHO) endorses the use ...>of population-based prevalence surveys for estimating the prevalence of trachoma. In general, the prevalence of TF in children aged 1–9 years and the prevalence of TT in adults aged ≥ 15 years are measured at the same time in any district being surveyed. This was the approach of the Global Trachoma Mapping Project, which undertook baseline surveys in > 1500 districts worldwide in order to provide the data required to start interventions where needed.
The survey design recommended by WHO is a two-stage cluster random sample survey, which uses probability proportional to size sampling to select 20–30 villages, and random, systematic or quasi-random sampling to select 25–30 households in each of those villages. In most surveys, everyone aged ≥ 1 year living in selected households is examined.
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Myanmar, as a country going through rapid socio-political transition and institutional development also suffers with a high burden of infectious disease. An ongoing challenge has been to effectively reach its 51 million population, most ..."attribute-to-highlight medbox">of whom battle tuberculosis, acute respiratory infections, diarrhoea and malaria including amongst under-five children.
Limited research data on the occurrence of resistant organisms in the nation have, makes it hard to estimate the exact antimicrobial resistance (AMR) scenario. Limited peer reviewed evidence indicates significant divergence from the average resistance trends in APAC region. Nevertheless, several key steps by Government of Myanmar have been instrumental in paving the way for the country to join other nations in the South East Asia Region to speed up its plan on addressing the AMR crisis. Combating antimicrobial resistance would, however, require highest political commitment, multi-sectoral coordination, sustained investment and technical assistance.
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his Inter Action Review report for the COVID-19 outbreak in Mauritius documents and assesses the country’s capacity to respond to the outbreak and identifies the best practices, strengths, gaps and challenges of the national response. Areas requir...ing improvements or sustained actions have been identified across the 9 strategic pillars of World Health Organization (WHO)’s COVID-19 Strategic Preparedness and Response Plan and an additional pillar for the country’s response beyond health. On an overall, the review aims to enhance and sustain the national response with a particular focus on strengthening the health systems.
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Mission report: June 11-20, 2017
Rabies remains an under-reported neglected zoonosis with a case-fatality rate of almost 100% in humans and animals. Dog-mediated human rabies causes tens of thousands ...ight medbox">of human deaths annually despite being 100% preventable. More than 95% of human cases are caused by the bite of a rabies-infected dog. Dog-mediated human rabies disproportionately affects rural communities, particularly children, and economically disadvantaged areas of Africa and Asia, where awareness of the disease and access to appropriate post-exposure prophylaxis (PEP) can be limited or nonexistent.
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Objectives and scope of the document
This document was developed to provide recommended management strategies for problems and disorders that are specifically related to the occurrence of a major s...tressful event. The recommended strategies will form the basis of a new module to be added to the WHO (2010) mhGAP Intervention Guide for use in non-specialized specialized health-care settings.
The scope of the problems covered by these guidelines is:
symptoms of acute stress in the first month after a potentially traumatic event, with the following subtypes:
- symptoms of acute traumatic stress (intrusion, avoidance and hyperarousal) in the first month after a potentially traumatic event;
- symptoms of dissociative (conversion) disorders in the first month after a potentially traumatic event;
- non-organic (secondary) enuresis in the first month after a potentially traumatic event (in children);
- hyperventilation in the first month after a potentially traumatic event;
- insomnia in the first month after a potentially traumatic event;
posttraumatic stress disorder (PTSD);
bereavement in the absence of a mental disorder.
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The objectives of these WHO guidelines are to provide updated evidence- based recommendations for the treatment of persons with hepatitis C infecti...on using, where possible, all DAA-only combinations. The guidelines also provide recommendations on the preferred regimens based on a patient’s HCV genotype and clinical history, and assess the appropriateness of continued use of certain medicines. This document also includes existing recommendations on screening for HCV infection and care of persons infected with HCV that were first issued in 2014
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The "Global NCD action plan" provides a road map and a menu of policy options for countries to take in order to attain the 9 voluntary global targets, including that of a 25% relative reduction in p...remature mortality from cardiovascular diseases, cancer, diabetes or chronic respiratory diseases by 2025. The main focus of this action plan is on 4 types of NCDs (cardiovascular diseases, cancer, chronic respiratory diseases, diabetes) which make the largest contribution to morbidity and mortality due to NCDs, and on 4 shared behavioural risk factors (tobacco use, unhealthy diet, physical inactivity, harmful use of alcohol).
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This report presents an overview of the transition process in Azerbaijan, some sustainability aspects and challenges stemming from donor withdrawal from TB-related activities, along with recommendations on how to overcome transition-related difficu...lties and ensure sustainability.
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An example of integration of research into epidemic response.
The report is geared towards mayors, local government officials and city policy planners.It highlights key areas where city leaders can tackle the drivers of NCDs, including tobacco use, air pollution, poor diets and lack ...ighlight medbox">of exercise, and improve road safety.
From anti-tobacco actions in Beijing and Bogor, to road safety initiatives in Accra and Bangkok, a bike sharing scheme in Fortaleza, and actions to create walkable streets for seniors that have reduced elderly pedestrian deaths by 16% in New York City, the report aims to share knowledge between urban policy planners.
Of the 19 case studies cited, 15 are from developing countries, where 85% of premature adult deaths through NCDs take place, and over 90% of road traffic fatalities are recorded. You can download the case studieson the website https://www.who.int/ncds/publications/tackling-ncds-in-cities/en/.
Over 90% of future urban population growth will be in low or middle-income countries, and seven of the world’s 10 largest cities are in developing countries.
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Disease outbreak news, 21 November 2019