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.
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July 2018
This fourth edition of the Unitaid/WHO market and technology landscape: HIV rapid diagnostic tests for self-testing report summarizes the current HIV testing gap; the challenges facing efforts to scale up; and the potential role HIV self-testing (HIVST) could play to achieve the United... Nation’s 90-90-90 targets. In particular, the report synthesises the existing and emerging market demand and supply of kits.
The information in this report is intended for manufacturers, donors, national programmes, researchers and other global health stakeholders who are exploring the potential role of HIVST.
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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 of whom battle tuberculosis, acute respiratory infections, diar...rhoea 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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Welcome to our implementation research case example focusing on chagas disease and Ecuador. This module offers a comprehensive exploration of the strategies employed to address the challenges posed by Chagas disease, a neglected tropical disease prevalent in Latin America. With a specific focus on t...he southern Ecuador context, this course describes the relationship between public health interventions, socioeconomic factors, and community understanding, all of which are essential for the prevention, treatment, and diagnosis of chagas disease
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This Implementation Kit (I-Kit), developed by the Health Communication Capacity Collaborative (HC3), which is funded by USAID and based at the Johns Hopkins Center for Communication Programs, offers structured guidance for improving social and behavioural change communication (SBCC) strategies relat...ed to malaria in pregnancy (MiP). Designed for programme managers and stakeholders, the toolkit addresses critical communication gaps in MiP programming, particularly among service providers. It provides tools to help users integrate MiP into situation analyses, segment audiences, define behavioural objectives and draft strategic communication plans.
MiP poses a significant public health challenge, contributing to maternal and neonatal mortality and morbidity in sub-Saharan Africa. Although effective interventions exist, such as the use of insecticide-treated nets, intermittent preventive treatment in pregnancy (IPTp) and timely diagnosis and treatment, their implementation remains inconsistent. The I-Kit supports more effective SBCC planning and implementation, with the aim of increasing the uptake and impact of these interventions and ultimately reducing malaria-related deaths and illness among pregnant women and newborns.
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The WHO Mekong Malaria Elimination (MME) programme hosted a 3-day meeting on 15–17 November 2023 in Siem Riep, Cambodia for representatives from national malaria programmes, research institutions, partners, donors, WHO and UN agencies. The meeting provided a forum to discuss surveillance systems, ...the future priorities for the WHO Malaria Elimination Database and areas of improvement for data sharing, the efficacy of antimalarial drugs, progress made in malaria elimination, and challenges raised by P. vivax elimination.
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This course will provide basic knowledge about the burden of malaria and effective tools to both treat and prevent malaria, and discuss the challenges and opportunities for taking these interventions to scale.
The ongoing global pandemic of SARS-CoV-2 (Covid-19) poses unique diagnostic and clinical management challenges in regions where seasonal epidemic-prone diseases are endemic. Diseases such as dengue, malaria, seasonal influenza, leptospirosis, chikungunya, scrub typhus and bacterial infections often... present with febrile syndromes that mimic or co-exist with SARS-CoV-2 infection, complicating diagnosis and treatment. This document provides guidelines for preventing, diagnosing and managing such co-infections. A high level of suspicion is essential during the monsoon and post-monsoon seasons, taking into account region-specific disease prevalence. While the WHO's case definition for SARS-CoV-2 is broad and sensitive, the need for parallel testing for co-infections, in accordance with the protocols of the MoHFW, ICMR, NVBDCP and NCDC, is necessitated by overlapping clinical features. Ensuring the availability of reliable rapid diagnostic kits and applying integrated clinical and laboratory approaches are crucial to improving patient outcomes in the context of concurrent infections.
Accessed on 26/08/2025.
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An After Action Review (AAR) is a qualitative review of actions taken in response to an event of public health concern. It is a means of identifying and documenting best practices and challenges demonstrated by the response to the event.
The increasing global trend of Antimicrobial resistance (AMR) has gradually emerged as a major public health challenge for the entire world. AMR has spread to almost all countries and regions, including Pakistan owing to the “misuse and overuse” of Antimicrobials, contributing to the increasing ...burden of infections due to resistant bacteria, viruses, parasites and fungi, while limiting the treatment options for managing such infections.
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Zika virus has been reported in dozens of countries around the world from 2015 onwards. WHO’s experience over 2016 has shown that Zika virus and the associated neurological complications represent a long-term public health challenge.
In a series of 5 podcasts on Zika, we bring you stories of Evid...ence in action. Episode 1: Zika epidemiology; Episode 2: Long-term management of congenital Zika virus syndrome; Episdoe 3: Ethics of Zika virus; Episode 4: Zika virus research; Episode 5: The future of outbreaks
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The National Malaria Elimination Strategic Plan (NMESP) 2024–2028 of Ghana outlines the country’s roadmap to shift from malaria control to elimination. Despite major progress—like reducing malaria deaths from nearly 2,800 in 2012 to 151 in 2022—malaria remains a major public health challenge... in Ghana.
The plan aims to reduce malaria deaths by 90% and cases by 50% by 2028 (compared to 2022), and to eliminate malaria entirely in 21 low-burden districts. It includes a mix of interventions such as insecticide-treated nets, indoor residual spraying, seasonal chemoprevention, malaria vaccination, and strong surveillance systems.
The strategy is tailored to the local malaria burden, promotes community engagement, relies on multisectoral partnerships, and ensures adequate resource mobilization. Its ultimate goal is to protect Ghana’s population, improve public health, and support the country’s socioeconomic development.
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Noncommunicable diseases (NCDs) such as cancer, cardiovascular diseases, diabetes and chronic respiratory diseases and their risk factors are an increasing public health and development challenge in Kyrgyzstan. This report provides evidence through three analyses that NCDs reduce economic outp...ut and discusses potential options in response, outlining details of their relative returns on investment. An economic burden analysis shows that economic losses from NCDs are equivalent to 3.9% of gross domestic product. An intervention costing analysis provides an estimate of the funding required to implement a set of policy interventions for prevention and clinical interventions. A cost–benefit analysis compares these implementation costs with the estimated health gains and identifies which policy packages would give the greatest returns on investment.
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Anopheles stephensi is an invasive mosquito species which has been found spreading across Africa. While this species presents a new challenge for malaria control on the continent, its surveillance and management have been ongoing in Asia for many years. This document aims to summarize key lessons fr...om 3 countries – India, the Islamic Republic of Iran and Sri Lanka – that have been working to control An. stephensi. It is hoped that their experiences and insights will be valuable for countries encountering An. stephensi for the first time.
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It is estimated that around 2 billion people worldwide do not have access to essential medicines. Access to medicines in the Eastern Mediterranean Region varies among countries, depending on their income level and allocation of domestic resources to medicine and vaccine procurement. Access to safe a...nd effective antibiotics remains a major challenge, especially for low- and middleincome countries. Barriers to access include high prices for new products, weak regulatory systems, substandard and falsified antibiotics, shortages of essential antimicrobials and inefficient procurement and supply management systems.
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Today more people are exposed to hazards. While humanitarian action to mitigate the impact of disasters will always be vitally important, the community is facing critical challenge- how to better anticipate, manage and reduce - disaster risks by integrating the potential threat into its planning and... policies at the community level. This manual aims to improve the capacity of the Panchayati Raj Institutions - the local self government and communities that face hazards due to environmental reasons. To help such capacity development efforts, we need learning materials focusing on key areas - water supply, environmental sanitation for better disaster management and preparedness.
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This is the first edition of Empiric Antibiotic Guidelines, as a guidance to all medical practitioners at North Okklapa General & Teaching Hospital.
Antibiotics are critical in the management of infection and can have a significant impact in reducing morbidity and mortality. Emerging antimicrobia...l resistance has been identified as global challenge by the World Health Organization. Careful use of antibiotics targeted to likely pathogens is an important strategy in combating development of antimicrobial resistance.
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Advanced HIV disease (defined in persons living with HIV with a CD4 cell count of <200cells/mm3 or presenting with a WHO Stage 3/4 AIDS-defining illness) poses a challenge to many countries globally and is responsible for significant mortality and morbidity among people living with HIV. In 2017, WHO... recommended a package of care for the prevention and management of advanced HIV disease. The package was composed of screening tests, diagnostics, prophylaxis, rapid antiretroviral therarpy initiation and enhanced adherence counselling.
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The global pandemic response has typically followed
cycles of panic followed by neglect. We are now, once
again, in a phase of neglect, leaving the world highly
vulnerable to massive loss of life and economic shocks
from natural or human-made epidemics and pandemics.
Quantifying the size of the... losses caused by large-scale
outbreaks is challenging because the epidemiological
and economic research in this field is still at an early
stage. Research on the 1918 influenza H1N1 pandemic
and recent epidemics and pandemics has shown a range
of estimated losses (panel).
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Response to the Periodic EpidemicThe document "Zanzibar's Victory Against Cholera Epidemic" details the successful efforts taken by Zanzibar to control and eliminate cholera outbreaks. It highlights the strategies implemented, including improved water and sanitation infrastructure, public health cam...paigns, vaccination programs, and rapid response measures. The report emphasizes community engagement, government commitment, and international partnerships as key factors in combating the disease. Zanzibar's experience serves as a model for other regions facing similar public health challenges, demonstrating that sustained efforts in hygiene, disease surveillance, and emergency preparedness can effectively control cholera epidemics.
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