This module is part of the WHO series The Immunological Basis for Immunization, which was initially developed in 1993 as a set of eight modules, comprising one module on general immunology and seven modules each devoted to one of the vaccines recommended for the Expanded Programme on Immunization, i....e. vaccines against diphtheria, measles, pertussis, polio, tetanus, tuberculosis and yellow fever. Since then, this series has been updated and extended to include other vaccines of international importance. The main purpose of the modules is to provide national immunization managers and vaccination professionals with an overview of the scientific basis of vaccination against a range of important infectious diseases. The modules developed since 1993 continue to be vaccine-specific, reflecting the biological differences in immune responses to the individual pathogens and the differing strategies employed to create the best possible level of protection that can be provided by vaccination. The modules also serve as a record of the immunological basis for the WHO recommendations on vaccine use, published in the WHO vaccine position papers.*
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Lancet Planet Health 2022;6: e760–68
The emergence of COVID-19 has drawn the attention of health researchers sharply back to the role that food systems can play in generating human disease burden. But emerging pandemic threats are just one dimension of the complex relationship between agriculture... and infectious disease, which is evolving rapidly, particularly in low-income and middle-income countries (LMICs) that are undergoing rapid food system transformation. This changing relationship is examined through four current disease issues.
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The article "Time to Align: Development Cooperation for the Prevention and Control of Non-Communicable Diseases" argues for greater international cooperation and investment in addressing non-communicable diseases (NCDs), especially in low- and middle-income countries. Traditionally, global health fu...nding has focused on infectious diseases, but the growing burden of NCDs—such as cardiovascular diseases, cancer, and diabetes—necessitates new approaches to development assistance.
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Antibiotic stewardship refers to coordinated efforts and activities that seek to measure and improve use of antibiotics. Implementation of ASPs has demonstrated positive public health and clinical impacts including reducing costs, lengths of hospital stays, and the burden of antibiotic resistance wh...ile maintaining or improving patient outcomes. The U.S. Centers for Disease Control and Prevention (CDC) released the Core Elements of Hospital Antibiotic Stewardship Programs in 2014, which outlines essential components for ASPs in hospitals and provides practical guidance for implementing a robust ASPin an acute care facility. Variations to the Core Elements have been developed to deal with the particular challenges in small, rural or critical access hospitals in the United States and in outpatient facilities and nursing homes.
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This FY 2017 Malaria Operational Plan presents a detailed implementation plan for Senegal, based on the strategies of PMI and the National Malaria Control Program (NMCP) strategy. It was developed in consultation with the NMCP and with the participation of national and international partners involve...d in malaria prevention and control in the country. The activities that PMI is proposing to support fit in well with the new National Malaria Control strategy and plan (2016-2020) and build on investments made by PMI and other partners to improve and expand malaria-related services, including the Global Fund to Fight AIDS, Tuberculosis, and Malaria (Global Fund) malaria grants. This document briefly reviews the current status of malaria control policies and interventions in Senegal, describes progress to date, identifies challenges and unmet needs to achieving the targets of the NMCP and PMI, and provides a description of activities that are planned with FY 2017 funding.
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For the primary health worker in a low/middle-income country (LMIC) setting, delivering quality primary care is challenging. This is often complicated by clinical guidance that is out of date, inconsistent and informed by evidence from high-income countries that ignores LMIC resource constraints and... burden of disease. The Knowledge Translation Unit (KTU) of the University of Cape Town Lung Institute has developed, implemented and evaluated a health systems intervention in South Africa, and localised it to Botswana, Nigeria, Ethiopia and Brazil, that simplifies and standardises the care delivered by primary health workers while strengthening the system in which they work. At the core of this intervention, called Practical Approach to Care Kit (PACK), is a clinical decision support tool, the PACK guide. This paper describes the development of the guide over an 18-year period and explains the design features that have addressed what the patient, the clinician and the health system need from clinical guidance, and have made it, in the words of a South African primary care nurse, ‘A tool for every day for every patient’. It describes the lessons learnt during the development process that the KTU now applies to further development, maintenance and in-country localisation of the guide: develop clinical decision support in context first, involve local stakeholders in all stages, leverage others’ evidence databases to remain up to date and ensure content development, updating and localisation articulate with implementation.
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The strategic priorities of the CCS 2014–2018 are:
(1) Strengthening the health system.
(2) Enhancing the achievement of communicable disease control targets.
(3) Controlling the growth of the noncommunicable disease burden.
(4) Promoting health throughout the life course.
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(5) Strengthening capacity for emergency risk management and surveillance systems for various health threats.
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This FY 2018 Malaria Operational Plan (MOP) presents a detailed implementation plan for Ethiopia, based on the strategies of PMI and the National Malaria Control Program (NMCP). It was developed in consultation with the Federal Ministry of Health (FMOH), NMCP, Ethiopian Public Health Institute (EP...HI), and regional health bureaus, and with the participation of national and international partners involved in malaria prevention and control in the country. The activities that PMI is proposing to support align with the National Malaria Strategic Plan (NMSP 2014-2020) and build on investments made by PMI and other partners to improve and expand malaria-related services, including the Global Fund to Fight AIDS, Tuberculosis, and Malaria (Global Fund) malaria grants. This document briefly reviews the current status of malaria control policies and interventions in Ethiopia, describes progress to date, identifies challenges and unmet needs to achieving the targets of the NMCP and PMI, and provides a description of activities that are planned with FY 2018 funding.
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Cardiovascular diseases (CVDs) are a growing public health problem in Ghana and other African countries. Strokes and other CVDs have become a leading cause of death due to increasing risk factors such as hypertension. According to the Global Burden of Disease study (GBD), ischaemic heart disease was... the fourth leading cause of death in Ghana in 2016. The prevalence of hyper-
tension, a major risk factor for CVDs, is increasing rapidly and ranges from 19% to 48%, according to the Ghana Health Service Annual Report, 2017, due to rising life expectancy and the increasing prevalence of contributing factors such as overweight/obesity. Early diagnosis and adequate management of the risk factors can reduce the fatal consequences of CVDs.
At the heart of improving risk assessment and management of CVDs are nationally approved guidelines, which facilitate standardisation of care approaches.
These guidelines developed by experts from all levels of health care and stakeholders capture all recommended approaches and necessary information for clinicians and other healthcare workers on CVDs. They also serve as a practical guide for assessing and managing the most important CVDs prevalent in Ghana and can be used at all levels of care namely health facilities without a doctor; with a general practitioner and with a physician specialist.
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In 2019, the Global Fund’s 6th Replenishment raised more than $USD14 billion to fight HIV, Tuberculosis and Malaria. Just two years later, the world has changed significantly. Put simply: COVID-19 devastated prevention and treatment programs. For the first time since the Global Fund’s founding, ...in 2020 the world lost ground in the fight against HIV, Tuberculosis and Malaria.
The Global Fund moved quickly to support countries to respond to COVID-19 and its impact on the three diseases, repurposing and leveraging additional funding to support urgent needs and adapt programs. Despite those efforts, the need for action to resume progress in the fight against HIV, TB and malaria has never been greater.
The world faces a choice.
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The 2014–2015 Ebola outbreak was catastrophic in West Africa but the indirect impact of increasing the mortality rates of other conditions was also substantial. The increased number of deaths caused by malaria, HIV/AIDS, and tuberculosis attributable to health system failures exceeded deaths from ...Ebola.
With a relatively limited COVID-19 caseload, health systems may have the capacity to maintain routine service delivery in addition to managing COVID-19 cases. When caseloads are high, and/or health workers are directly affected, strategic adaptations are required to ensure that increasingly limited resources provide maximum benefit for the refugees and surrounding host population. The following are key considerations for UNHCR operations on prioritized health care services in the event of a COVID-19 outbreak. These are based on WHO Guidance for Maintaining Essential Health Services and UNHCR guidance for operations and where relevant operation or site level outbreak preparedness and response plans.
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The article discusses the significant impact of chronic obstructive pulmonary disease (COPD) as a global health issue, with cigarette smoking as the main risk factor. However, in developing countries, the causes of COPD are often multifactorial, involving environmental tobacco smoke, biomass fuel sm...oke, dust, fumes, childhood illnesses, and tuberculosis (TB). Up to half of COPD patients in these regions are non-smokers. The article emphasizes that while smoking is crucial, other risk factors contribute significantly to COPD, particularly in low- and middle-income countries. It highlights the need for targeted research and public health strategies to address these diverse contributors to COPD, especially in Africa.
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Antimicrobial resistance (AMR) is an important public health concern shared by developed and developing countries. In developing countries the burden of infectious diseases is greater and exacerbated by limited access to, and availability and affordability of, antimicrobials required to treat infect...ions caused by AMR organisms. With drugs not listed on the essential drugs list (EDL), problems of increased morbidity, costs of extended hospitalisation and mortality are extremely serious. The problem of susceptibility to and spread of infections caused by multidrug-resistant (MDR) infectious agents is fuelled by factors such as limited access to clean water and sanitation to ensure personal hygiene, malnutrition, and the HIV/TB epidemic.
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The Compendium of data and evidence-related tools for use in TB planning and programming was developed as a companion document to the People-centred framework for tuberculosis programme planning and prioritization – user guide, published by the World Health Organization (WHO)... in 2019. The compendium is intended to support implementation of the people-centred framework user guide. It can also be used independently to inform decisions taken by national tuberculosis (TB) programmes about the implementation of the tools included in this document.
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Severe bacterial infections are a leading cause of morbidity and mortality among people with advanced HIV disease, after tuberculosis and cryptococcal disease. For countries to reach the end-AIDS targets for 2030, there is a need to establish a roadmap for managing severe bacterial infections and re...duce mortality. The purpose of the meeting was to
Review the current research and implementation data on the use of prophylactic antibiotics (specifically azithromycin/macrolides) as part of the AHD package of care; To review options for preventing SBIs that are in line with goals of reducing AMR; Present the current evidence on diagnostics for SBI; Discuss research gaps and implementation challenges.
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SDG target 3.3: by 2030, end the epidemics of AIDS, tuberculosis, malaria and neglected tropical diseases and combat hepatitis, waterborne diseases and other communicable diseases.
Countries are making progress toward the global goal of 95% of people living with HIV knowing their status by 2025. However, considerable gaps remain in achieving these goals globally. Men in high HIV burden settings and men from key populations in all settings are consistently less likely to know t...heir HIV status than women. Globally, 78% of men ages 15 years and older who are living with HIV are aware of their HIV status, compared with 86% of women with HIV of these ages.
Offering HIV testing services, including HIV self-testing, at formal and informal workplaces has emerged as an effective, acceptable and feasible approach for reaching men. A 2018 World Health Organization (WHO) and International Labour Organization (ILO) policy brief provides key guiding principles for HIVST implementation at workplaces. Building on the 2018 policy brief, this brief captures early experience with HIVST implementation at workplaces and discusses emerging approaches of sustainable financing that can be adapted for HIV self-testing at workplaces.
The primary audiences for this policy brief are ministries of health and labour, national HIV programmes, employers’ organizations, workers’ organizations (labour unions), enterprises, implementing partners, including civil society organizations, and health insurance agencies.
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The article outlines the prioritized research agenda for the prevention and control of chronic respiratory diseases (CRDs) as part of the World Health Organization's (WHO) action plan on noncommunicable diseases (NCDs) from 2008 to 2013. It highlights the significant global impact of CRDs, including... asthma, chronic obstructive pulmonary disease (COPD), and other related conditions, particularly in low- and middle-income countries (LMICs). The document stresses the need for effective prevention strategies and better surveillance, as well as enhanced healthcare infrastructure and resources in LMICs. It calls for research into CRD risk factors, effective interventions, and integrated care approaches that align with broader NCD prevention programs. The article emphasizes the importance of public health initiatives and cross-sector collaborations to reduce the disease burden and improve patient outcomes.
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7 April 2022. Aimed at national policymakers, public health and healthcare planners, staff working in reception centres, and healthcare staff caring for displaced persons, the information note concludes that universal testing of incoming refugees from Ukraine for tuberculosis (TB) infection is not r...ecommended. Specific groups, such as household contacts of bacteriologically confirmed pulmonary cases, or those who are immunocompromised should however be considered for TB infection testing.
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Pathogen genomic surveillance has become a priority for public health systems in recent years. Genomic sequencing is increasingly being used to characterize pathogens and monitor important public health priorities (e.g. poliovirus, influenza virus, Mycobacterium tuberculosis and Vibrio cholerae, ant...imicrobial resistance (AMR)). The decrease in cost and time of sequencing and the exponential development of bioinformatic pipelines have played a critical role in integrating pathogen genomics into routine public health surveillance. The coronavirus disease 2019 (COVID-19) pandemic has highlighted the role that sequencing plays in the surveillance of infectious diseases. Sequencing facilitates earlier detection, more accurate investigation of outbreaks, closer real-time monitoring of pathogen evolution and tailored development and evaluation of interventions to inform local to global public health decision-making and action. However, there remains a need to coordinate efforts, leverage and link existing surveillance and laboratory networks and capabilities, and systematically integrate genetic sequence data (GSD) with clinical and epidemiological data to strengthen its utility.
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