Extract from report of GACVS meeting of 3-4 December 2009, published in the WHO Weekly Epidemiological Record on 29 January 2010
Extract from report of GACVS meeting of 29-30 November 2006, published in the WHO Weekly Epidemiological Record of 19 January 2007
The number of reported cases of Ebola virus disease (EVD) consistently declined in recent weeks, with 14 new confirmed cases reported in North Kivu and Ituri provinces during the epidemiological week of 30 September through 6 October. At peak transmission in April 2019, there were 126 cases in the w...eek. Although the decline in case incidence is encouraging, it must be interpreted with caution as the situation remains highly contingent upon the level of access and security.
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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
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Modelling the health impacts of disruptions to essential health services during COVID-19 Module 1
Several epidemiological models have been created to assess the potential impact of disruptions to essential health services caused by COVID-19 on morbidity and mortality from conditions other than COVI...D-19 illness. This guide presents models that have been used to assess these indirect impacts. The effects have been studied in various settings, using a variety of models.
The guide is intended for people who need to understand what the models say, their construction and their underlying assumptions, or need to use models and their outcomes for planning and programme development and to support policy decisions for a country or region.
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Parasites & Vectors volume 11, Article number: 264 (2018)
Dengue creates a staggering epidemiological and economic burden for endemic countries. Without a specific therapy and with a commercial vaccine that presents some problems relative to its full effectiveness, initiatives to improve vector... control strategies, early disease diagnostics and the development of vaccines and antiviral drugs are priorities. In this study, we present the probable origins of dengue in America and the trajectories of its spread. Overall, dengue diagnostics are costly, making the monitoring of dengue epidemiology more difficult and affecting physicians’ therapeutic decisions regarding dengue patients, especially in developing countries. This review also highlights some recent and important findings regarding dengue in Brazil and the Americas. We also summarize the existing DENV polymerase chain reaction (PCR) diagnostic tests to provide an improved reference since these tests are useful and accurate at discriminating DENV from other flaviviruses that co-circulate in the Americas. Additionally, these DENV PCR assays ensure virus serotyping, enabling epidemiologic monitoring.
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Chagas disease caused by Trypanosoma cruzi is a public health issue in Latin America. This highly diverse parasite is divided into at least seven discrete typing units (DTUs) TcI-TcVI and Tcbat. Some DTUs have been associated with geographical distribution in epidemiological scenarios and clinical m...anifestations, but these aspects remain poorly understood. Many studies have focused on studying the parasite and its vectors/hosts, using a wide variety of genetic markers and methods. Here, we performed a systematic review of the literature for the last 20 years to present an update of DTUs distribution in the Americas, collecting ecoepidemiological information. We found that the DTUs are widespread across the continent and that there is a whole gamma of genetic markers used for the identification and genotyping of the parasite. The data obtained in this descriptor could improve the molecular epidemiology studies of Chagas disease in endemic regions.
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Onchocerciasis used to be an important public health problem in Africa, with over 37 million people infected and millions suffering from debilitating skin disease, terrible itching, impaired vision and
blindness. But the epidemiological situation has improved dramatically over the last two decades.... Community directed treatment with ivermectin has effectively brought the disease under control in most endemic areas where onchocerciasis is no longer a public health risk.
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Leptospirosis, a spirochaetal zoonosis, occurs in diverse epidemiological settings and affects vulnerable populations, such as rural subsistence farmers and urban slum dwellers. Although leptospirosis is a life-threatening disease and recognized as an important cause of pulmonary haemorrhage syndrom...e, the lack of global estimates for morbidity and mortality has contributed to its neglected disease status
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The updates are based on evidence emerging from the: Ongoing monitoring of the disease. Protection that the population already developed against COVID-19 through previous infection or vaccination. Epidemiological situation, availability of diagnostic tests and access to therapeutic options.
[Presentación] El presente libro, elaborado por integrantes de múltiples generaciones
de técnicos e investigadores salvadoreños dedicados a la enfermedad de Chagas, refleja claramente su actual situación epidemiológica, la evolución
histórica de la misma y los retos y perspectivas que la... prevención, control
y atención médica de la enfermedad de Chagas presentan al país.
También se destaca el aporte de la Agencia de Cooperación Internacional del Japón (JICA), que junto con OPS en Centroamérica y CIDA Canadá en Honduras, han ocupado un capítulo fundamental en el desarrollo de la vigilancia y control de la Enfermedad de
Chagas.
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I examine the effectiveness of donors in targeting the highest burden of malaria in the Democratic Republic of Congo when health information structure is fragmented. I exploit local variations in the burden of malaria induced by mining activities as well as financial and epidemiological data from he...alth facilities to estimate how local aid is matching local health needs. Using a regression discontinuity design, I find significant but quantitatively small variations in aid to health facilities located within mining areas. Comparing local aid with the additional cost of treatment and prevention associated with the increased risk of malaria transmission, I find suggestive evidence that local populations with the highest burden of the disease receive a proportionately lower share of aid compared to neighbouring areas with reduced exposure to malaria infection. The evidence of disparities in the allocation of aid for malaria supports the view that donors may have inaccurate information about local population needs.
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Ethiopia faces unprecedented public health risks with over 17.4 million people in need of health assistance due to a compounded security, epidemiological, environmental and socio-economic hardships throughout the country. Specifically, the prolonged drought and localized conflicts have negatively im...pacted public health systems, whose access has become severely hindered because of physical constraints, infrastructure, equipment damages, lack of available healthcare workforce and negative coping mechanisms resulting from livelihoods deterioration. Whereas the World Health Organization (WHO) assistance has been critical to coordinate humanitarian efforts in affected areas, additional efforts are required in the coming months to address ongoing epidemic outbreaks and support the recovery process in conflict-affected areas (Afar, Amhara, Tigray and Gambelia) that are now accessible.
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Atherosclerotic lower-extremity peripheral artery disease (PAD) is increasingly recognized as an important cause of cardiovascular morbidity and mortality that affects more than 230 million people worldwide. Traditional cardiovascular risk factors, including advanced age, smoking, and diabetes, are ...strongly linked to an increase risk of PAD. Although PAD has been historically underappreciated compared to coronary artery disease and stroke, greater attention on PAD in recent years has led to important new epidemiologic insights in the areas of thrombosis, inflammation, dyslipidemia, and microvascular disease. In addition, the concept of polyvascular disease, or clinically-evident atherosclerosis in multiple arterial beds, is increasingly identified as a particularly malignant cardiovascular disease worthy of special clinical attention and further study. It is noteworthy that PAD may increase the risk of adverse outcomes in similar or even greater magnitude than coronary disease or stroke. In this review, we highlight important new advances in the epidemiology of PAD with a particular focus on polyvascular disease, emerging biomarkers, and differential risk pathways for PAD compared to other atherosclerotic diseases.
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Heart failure is an important global health problem, and the associated public health and economic effect is increasing across all societies and geographies.
Epidemiological studies have estimated that there are more than 25 million patients with heart failure globally, and population-based studie...s from North America and Europe have estimated that 1–2% of people are living with heart failure. Factors such as ageing and expanding populations have contributed to increasing hospital admissions for heart failure.
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ver the past 15 years, dengue fever, an endemic disease in the country, has triggered significant epidemics in 2010, 2019, and most recently in 2023. This year, due to the escalating number of reported cases, the Secretariat of Health (SESAL) issued an epidemiological alert in February. By March, th...e incidence of cases had escalated to epidemic proportions.
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This is the 35th situation report for the multi-country outbreak of mpox, which provides details on the latest epidemiological trends, including an update on the geographic expansion of mpox in the WHO African Region from July – August 2024.
he aetiology of asthma and allergic disease remains poorly understood, despite considerable research. The International Study of Asthma and Allergies in Childhood (ISAAC), was founded to maximize the value of epidemiological research into asthma and allergic disease, by establishing a standardized m...ethodology and facilitating international collaboration. Its specific aims are: 1) to describe the prevalence and severity of asthma, rhinitis and eczema in children living in different centres, and to make comparisons within and between countries; 2) to obtain baseline measures for assessment of future trends in the prevalence and severity of these diseases; and 3) to provide a framework for further aetiological research into genetic, lifestyle, environmental, and medical care factors affecting these diseases. The ISAAC design comprises three phases. Phase 1 uses core questionnaires designed to assess the prevalence and severity of asthma and allergic disease in defined populations. Phase 2 will investigate possible aetiological factors, particularly those suggested by the findings of Phase 1. Phase 3 will be a repetition of Phase 1 to assess trends in prevalence.
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Considerable energy has been expended over the last two decades in developing methods for identifying the presence of asthma among participants in population studies. The objective of this endeavour has commonly been to enable epidemiological research on risk factors for asthma, with the ultimate ai...m of preventing the disease. However, there are other reasons for measuring the prevalence of asthma in populations, including the desire to assess the burden of disease attributable to asthma, to track changes over time, and to compare the prevalence among population groups defined by geographical, demographic or social factors. Two major international collaborative studies arising from this work have made major contributions to our knowledge about asthma
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