Terminology used to describe the transmission of pathogens through the air varies across scientific disciplines, organizations and the general public. While this has been the case for decades, during the coronavirus disease (COVID-19) pandemic, the terms ‘airborne’, ‘airborne transmission’ a...nd ‘aerosol transmission’ were used in different ways by stakeholders in different scientific disciplines, which may have contributed to misleading information and confusion about how pathogens are transmitted in human populations.
This global technical consultation report brings together viewpoints from experts spanning a range of disciplines with the key objective of seeking consensus regarding the terminology used to describe the transmission of pathogens through the air that can potentially cause infection in humans.
This consultation aimed to identify terminology that could be understood and accepted by different technical disciplines. The agreed process was to develop a consensus document that could be endorsed by global agencies and entities. Despite the complex discussions and challenges, significant progress was made during the consultation process, particularly the consensus on a set of descriptors to describe how pathogens are transmitted through the air and the related modes of transmission. WHO recognizes the important areas where consensus was not achieved and will continue to address these areas in follow-up consultations.
more
This document updates the earlier version published in April 2020. In recent weeks, information on the potential use of chloroquine or hydroxychloroquine for the treatment of people with COVID-19 has been disseminated in academic journals and public media. Although there are now ongoing clinical tri...als testing the efficacy and safety of several medicines for COVID-19, as of the date of this document, there is a lack of quality evidence to demonstrate chloroquine and/or hydroxychloroquine are effective in the treatment of COVID-19. Evidence is recently emerging via small studies with sub-optimal methodologies that are conflicting.
more
Emergency medical teams (EMTs) play an important role in strengthening health service networks in terms of their strategies and tactics for planning mass vaccination programs, especially in remote or under-resourced areas or those overwhelmed by COVID-19. EMTs experience deploying in remote areas an...d handling operational challenges to ensure their response even under the most austere conditions will be of great support in facing the technical and logistical challenges to timely and equitable access to vaccines at the local level.
more
Refugees and migrants face similar health threats from COVID-19 as their host populations. However, inadequate access to essential services and exclusion may makes early detection, testing, diagnosis, contact tracing and seeking care for COVID-19 difficult for refugees and migrants thus increasing t...he risk of outbreaks in these population and presenting an additional threat to public health. This document offers guidance to Member States and partners for the inclusion of refugees and migrants, as part of holistic efforts to respond to COVID-19 epidemics in the general populations.
17 April 2020
more
Emergency medical teams (EMT) are first response health care providers – doctors, nurses, paramedics, and others – during outbreaks and emergencies or disasters, working with governments, charities such as nongovernmental organizations (NGOs), armies, and international organizations such as the ...International Red Cross/Red Crescent movement. They comply with the classification and minimum standards set by the World Health Organization (WHO) and its partners and bring to an emergency their training and self-sufficiency so as not to burden the national health system. EMT initiatives strengthen national surge capacities and facilitate the deployment of internationally classified teams of health- care professionals to countries and territories during emergencies, particularly during disease outbreaks and natural disasters, providing immediate assistance when national health systems are overwhelmed . Considering that they aim to support the provision of quality clinical care services to populations affected by public health emergencies, the expectation is that financial resources and equipment will be available to enable the performance of the requested task.
more
The report offers 20 top recommendations for getting ahead of future outbreaks in Yemen and similarly complex humanitarian settings.
In 2015, Yemen was declared a Level 3 emergency by the UN, kicking into gear the highest level of humanitarian support. A massive cholera outbreak followed, leading t...o 1 million suspected cases in 2 waves from September 2016-July 2018.
“We largely know ‘what to do’ to control cholera, but context-specific practices on ‘how to do it’ in order to surmount challenges to coordination, logistics, insecurity, access and politics remain needed,” the report states.
While the response improved between the 2 waves, there were gaps. For one, Yemen’s history of cholera should have triggered a heavy focus on pre-planning for an epidemic, such as stockpiling supplies and doubling down on community-based surveillance, the report fou
more
The WHO Guidance for Conducting a Country COVID-19 Intra-Action Review (IAR) was developed to guide countries to conduct periodic review(s) of their national and subnational COVID-19 response, so countries do not miss critical opportunities for learning and improvement to better respond to the COVID...-19 outbreak in their countries, especially as the possibility of a protracted pandemic becomes increasingly probable. The IAR is a country-led facilitated process conducted during the COVID-19 outbreak in-country, bringing together a small group of COVID-19 responders with knowledge of the public health response pillars under review. Although IARs can be conducted online or face-to-face, the online format is recommended, especially if community transmission remains high in the country. The IAR will identify practical areas for immediate remediation and sustained improvement of the ongoing response.
more
These guidelines provide a recommendation on iodine thyroid blocking (ITB), via oral administration of stable iodine, as an urgent protective action in responding to a nuclear accident. This recommendation aims to support emergency planners, policy makers, public health specialists, clinicians and o...ther relevant stakeholders, in order to strengthen public health preparedness for radiation emergencies in WHO Member States as required by the International Health Regulations (IHR) and in line with the international safety standards (GSR Part 7). The scope of the guidelines is confined to public health aspects of planning and implementation of ITB before and during a radiation emergency, such as dosage and timing of ITB administration, adverse effects of stable iodine, its packaging, storage, and distribution.
These guidelines supersede the 1999 WHO Guidelines for Iodine Prophylaxis following Nuclear Accidents.
more
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 re...placing 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).
more
This technical report presents results from the FEEDcities Project – Eastern Europe and Central Asia, a cross-sectional survey conducted in Almaty, Aktau and Kyzylorda, Kazakhstan, between July and August 2017, to evaluate the local street food environment. It characterized the vending sites, the ...food offered and the nutritional composition of the industrial and homemade foods available in these settings. The policy implications of the findings are outlined.
The study was conducted within a bilateral partnership between WHO and the Institute of Public Health of the University of Porto, in collaboration with the Faculty of Medicine, the Faculty of Nutrition and Food Sciences and the Faculty of Pharmacy of the University of Porto (WHO registration 2015/591370 and 2017/698514). The study was funded through a biennial collaborative agreement and joint programmes between the Government of Kazakhstan and United Nations agencies in Kazakhstan for Kyzylorda and Mangystau oblasts, a voluntary contribution by the Ministry of Health of the Russian Federation and the Resolve to Save Lives project of Bloomberg Philanthropies.
more
Notable progress has also been made on other key health indicators such as reducing maternal, infant and child deaths and malnutrition, increasing immunization coverage, eliminating infectious diseases such as polio and reducing the incidence of malaria, tuberculosis and diarrhoeal diseases.
But ...despite such substantial progress, the country now faces new and emerging new challenges such as the rising burden of noncommunicable diseases, increased risks associated with disasters, environmental threats and health emergencies during disease outbreaks including the COVID-19 pandemic that is a serious public health threat to Bangladesh. To establish a resilience system for future potential pandemics, the national capacity for emergency preparedness and early response to health emergencies needs to be bolstered considerably.
more
Available in Arabic, Chinese, English, French, Russian and Spanish. You can download a summary of the main report and background documents!
The report demonstrates that the current system—at both national and international levels— was not adequate to protect people from COVID-19. The time it t...ook from the reporting of a cluster of cases of pneumonia of unknown origin in mid-late December 2019 to a Public Health Emergency of International Concern being declared was too long. February 2020 was also a lost month when many more countries could have taken steps to contain the spread of SARS-CoV-2 and forestall the global health, social, and economic catastrophe that continues its grip. The Panel finds that the system as it stands now is clearly unfit to prevent another novel and highly infectious pathogen, which could emerge at any time, from developing into a pandemic.
more
The following protocol has been designed to investigate the First Few X cases (FFX) and their close contacts. It is envisioned that the FFX 2019-nCoV investigation will be conducted across several countries or sites with geographical and demographical diversity. Using a standardized protocol such a...s the protocol provided here, epidemiological exposure data and biological samples can be systematically collected and shared rapidly in a format that can be easily aggregated, tabulated and analyzed across many different settings globally for timely estimates of 2019-nCoV infection severity and transmissibility, as well as to inform public health responses and policy decisions. This is particularly important in the context of a novel respiratory pathogen, such as 2019-nCoV
more
The document provides comprehensive guidelines for managing cholera outbreaks, including detection, confirmation, response, treatment, and prevention. It emphasizes the importance of rehydration, water sanitation, hygiene promotion, and community mobilization to limit the spread. This guide is desig...ned for healthcare professionals and public authorities to ensure an effective and coordinated response.
more
This technical report presents the results of a cross-sectional survey conducted in Sarajevo, the Federation of Bosnia and Herzegovina, Bosnia and Herzegovina, between June and August 2017, as part of the FEEDcities Project (Food Environment Description in cities – eastern Europe and central Asia).... The aim of the report is to describe the city’s local street food and takeaway food environment, exploring the characteristics of food vending sites, the industrially produced and homemade foods they typically offer, and the nutritional composition of these foods. Finally, the report provides guidance on how to address its findings through policy action.
The study was conducted through a bilateral partnership between the World Health Organization (WHO) and the Institute of Public Health of the University of Porto, in collaboration with the Faculty of Medicine, the Faculty of Nutrition and Food Sciences, the Faculty of Pharmacy of the University of Porto (WHO registration 2015/591370 and 2017/698514) and the Institute of Public Health of the Federation of Bosnia and Herzegovina. The study was funded through a voluntary contribution of the Ministry of Health of the Russian Federation, and through a contribution made by the Swiss Agency for Development and Cooperation (SDC)/Swiss Government to a joint WHO/SDC project, “Reducing Health Risk Factors in Bosnia and Herzegovina: Developing and Advancing Modern and Sustainable Public Health Strategies, Capacities and Services to Improve Population Health”, implemented in Bosnia and Herzegovina.
more
The WHO Cholera Rapid Diagnostic Test (RDT) Target Product Profile outlines the key requirements for developing improved cholera RDTs. It highlights the need for fast, accurate, and easy-to-use tests for early outbreak detection in resource-limited settings. The document sets desired and acceptable ...performance criteria, including high sensitivity and specificity, rapid results (under 15 minutes), and usability by non-laboratory personnel. The tests should be affordable, stable in extreme conditions, and require minimal training. The goal is to enhance cholera surveillance and outbreak response, ensuring quick containment and improved public health outcomes.
more
Suicides take a high toll. Over 800 000 people die by suicide every year and it is the second leading cause of
death in 15-29-year-olds. Most suicides occur in low- and middle-income countries where resources
and services, if they do exist, are often scarce and limited for early identification, tr...eatment and support of
people in need. These striking facts and the lack of implemented timely interventions make suicide a serious
global public health problem that needs to be tackled urgently.
more
Traditional food markets play important economic, cultural, and social role and are sources of livelihood for millions of people in urban and rural areas. The manual Five keys for safer traditional food markets: risk mitigation in traditional food markets in the Asia-Pacific Region aims to support a...nd guide local authorities, market community, and consumers to transform these markets into safer and healthier places through practical risk mitigation measures and community engagement strategies. The manual provides guidance on the implementation of five keys to promote public health and safety, particularly, in the context of food safety, zoonoses diseases, and infectious respiratory diseases.
more
The main objective of this mission was to assess the level of preparedness of Guinea-Bissau in respect of the WHO consolidated checklist. The checklist helps countries to assess and test their level of readiness it is being used to identify concrete action to be taken and where countries will requir...e support from partners. It lists 10 key components and tasks for both countries and the international community that should be completed within 30, 60 and 90 days from the date of issue of the list, with minimal requirements for equipment, material and human resources.
The components include: overall coordination; rapid response teams; public awareness and community engagement; infection prevention and control; epidemiological and laboratory surveillance; contact tracing; points of entry; laboratory; social mobilization and risk communication; budget.
more