The Fifty-first World Health Assembly,
Recalling resolutions WHA22.29, WHA25.55 and WHA28.54 on the prevention of blindness, and
WHA45.10 on disability prevention and rehabilitation; Aware of previous efforts and progress made in the global fight against infectious eye diseases, in particular trac...homa; Noting that blinding trachoma still constitutes a serious public health problem amongst the poorest populations in 46 endemic countries.
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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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Mosquitoes, flies, bugs and other vectors transmit viruses, parasites and bacteria that infect millions of people globally. They cause many diseases, including malaria, dengue, leishmaniases, Chagas disease and Zika virus disease.
The World Health Organization (WHO) has developed a new strategy to... strengthen vector control worldwide. Member States welcomed this integrated approach at the 2017 World Health Assembly and adopted a resolution to support the strategy.
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The GTFCC Laboratory Support for Public Health Surveillance document provides guidelines on using DNA-based molecular techniques for identifying and monitoring Vibrio cholerae strains in cholera outbreaks. It highlights the importance of genetic sequencing for tracking transmission, detecting new va...riants, and improving outbreak response. The report explains methods like PCR testing, whole genome sequencing (WGS), and multiple loci VNTR analysis (MLVA), detailing their advantages and applications. It also outlines best practices for sample collection, storage, and transportation, emphasizing collaboration between national and international laboratories to enhance cholera surveillance and control efforts.
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Rationale for including this intervention in the proposal
Background: Community health worker (CHW) programmes are a valuable component of primary care in resource-poor settings. The evidence supporting their effectiveness generally shows improvements in disease-specific outcomes relative to the absence of a CHW programme. In this study, we evaluated expan...ding an existing HIV and tuberculosis (TB) disease-specific CHW programme into a polyvalent, household-based model that subsequently included non-communicable diseases (NCDs), malnutrition and TB screening, as well as family planning and antenatal care (ANC).
Methods: We conducted a stepped-wedge cluster randomised controlled trial in Neno District, Malawi. Six clusters of approximately 20 000 residents were formed from the catchment areas of 11 healthcare facilities. The intervention roll-out was staggered every 3 months over 18 months, with CHWs receiving a 5-day foundational training for their new tasks and assigned 20–40 households for monthly (or more frequent) visits.
Findings: The intervention resulted in a decrease of approximately 20% in the rate of patients defaulting from chronic NCD care each month (−0.8 percentage points (pp) (95% credible interval: −2.5 to 0.5)) while maintaining the already low default rates for HIV patients (0.0 pp, 95% CI: −0.6 to 0.5). First trimester ANC attendance increased by approximately 30% (6.5pp (−0.3, 15.8)) and paediatric malnutrition case finding declined by 10% (−0.6 per 1000 (95% CI −2.5 to 0.8)). There were no changes in TB programme outcomes, potentially due to data challenges.
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INTRODUCTION: The COVID-19 pandemic has disrupted health systems around the world. The objectives of this study are to estimate the overall effect of the pandemic on essential health service use and outcomes in Mexico, describe observed and predicted trends in services over 24 months, and to estimat...e the number of visits lost through December 2020.
METHODS: We used health information system data for January 2019 to December 2020 from the Mexican Institute of Social Security (IMSS), which provides health services for more than half of Mexico's population-65 million people. Our analysis includes nine indicators of service use and three outcome indicators for reproductive, maternal and child health and non-communicable disease services. We used an interrupted time series design and linear generalised estimating equation models to estimate the change in service use and outcomes from April to December 2020. Estimates were expressed using average marginal effects on the risk ratio scale.
RESULTS: The study found that across nine health services, an estimated 8.74 million patient visits were lost in Mexico. This included a decline of over two thirds for breast and cervical cancer screenings (79% and 68%, respectively), over half for sick child visits and female contraceptive services, approximately one-third for childhood vaccinations, diabetes, hypertension and antenatal care consultations, and a decline of 10% for deliveries performed at IMSS. In terms of patient outcomes, the proportion of patients with diabetes and hypertension with controlled conditions declined by 22% and 17%, respectively. Caesarean section rate did not change.
CONCLUSION: Significant disruptions in health services show that the pandemic has strained the resilience of the Mexican health system and calls for urgent efforts to resume essential services and plan for catching up on missed preventive care even as the COVID-19 crisis continues in Mexico.
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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 premature mortality from cardiovascular diseases, cancer, diabetes or chronic respiratory diseases by 2...025. 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 updated version, endorsed by the World Health Assembly in May 2021 through resolution WHA74.9, reflects lessons learned in the global malaria response over the last 5 years. While the milestones and targets remain the same, the approaches to tackling the disease, in some areas, have evolved to ...keep pace with the changing malaria landscape.
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The Strategy provides a high-level unifying framework to leverage existing capacities, address barriers and strengthen the use of genomic surveillance in the detection, monitoring and response to public health threats. Genomic surveillance is part of the broader surveillance and laboratory system, a...nd its implementation should reinforce end-to-end capacities including sample collection, diagnostics, data sharing and analysis. The strategy aims to facilitate the connectivity between different disease control programs and surveillance networks. This interoperability will strengthen the cross-cutting essential public health laboratory functions underpinning genomics holistically. The strategy articulates the overarching goal, objectives and strategic actions needed. These are dependent on commitments from countries, partners and WHO for their implementation.
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Validation of elimination of mother-to-child transmission, or vertical transmission, of HIV, syphilis and hepatitis B virus (HBV), is an attestation that a country has successfully met standard criteria for elimination, or for being at 1 of the 3 levels of achievement on the ‘Path to Elimination... while delivering quality services for women, girls and their children, through the life-course, respecting human rights and ensuring gender equality and community engagement.
This document, the third version, adds on EMTCT of hepatitis B virus (HBV), bringing together a package of interventions and metrics to support integrated management and monitoring of vertical transmission across a wide range of epidemiological and programmatic contexts.
This document, the third version, adds on EMTCT of hepatitis B virus (HBV), bringing together a package of interventions and metrics to support integrated management and monitoring of vertical transmission across a wide range of epidemiological and programmatic contexts.
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Trachoma is the leading infectious cause of blindness (2). It is characterized by repeated
conjunctival infection with particular strains of Chlamydia trachomatis. This scars the conjunctivae and,
in some cases, leads to trichiasis with or without entropion. The abrasive action of eyelashes can
d...amage the cornea. In 2018, trachoma affected the poorest residents of the poorest communities of 43
countries
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The Global Action Plan for the Prevention and Control of Noncommunicable Diseases 2013-2020 by the World Health Organization (WHO) outlines a comprehensive strategy to address the global rise in noncommunicable diseases (NCDs), including cardiovascular diseases, cancer, chronic respiratory diseases,... and diabetes.
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Air pollution is a major environmental risk factor and contributor to chronic, noncommunicable diseases (NCDs). However, most public health approaches to NCD prevention focus on behavioural and biomedical risk factors, rather than environmental risk factors such as air pollution. This article discus...ses the implications of such a focus. It then outlines the opportunities for those in public health and environmental science to work together across three key areas to address air pollution, NCDs and climate change: (a) acknowledging the shared drivers, including corporate determinants; (b) taking a ‘co-benefits’ approach to NCD prevention; and (c) expanding prevention research and evaluation methods through investing in systems thinking and intersectoral, cross-disciplinary collaborations.
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Regular physical activity is proven to help prevent and treat noncommunicable diseases (NCDs) such as heart disease, stroke, diabetes and breast and colon cancer. It also helps to prevent hypertension, overweight and obesity and can improve mental health, quality of life
and well-being.
This guide provides a practical overview of the process of developing a Theory of Change, focusing on using a stakeholder-driven, workshop approach to achieve this.