Este documento ofrece una orientación provisional a los países sobre las consideraciones y estrategias de análisis para los casos sospechosos de hepatitis aguda grave de etiología desconocida en niños. Está dirigido principalmente a las partes interesadas en el ámbito clínico, programático,... de laboratorio y de diagnóstico de los Estados miembros y a las autoridades nacionales de salud pública que participan en la identificación e investigación de casos de hepatitis aguda grave en niños.
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This manual describes methods for investigating clusters or outbreaks that may be of chemical origin and describes the importance of a structured, coordinated, collaborative multidisciplinary, multi-agency approach at local, regional, national and international levels.
Trypanosoma cruzi is the etiological agent of Chagas disease (CD), considered one of the most important parasitic infections in Latin America. Between 25 and 90 million humans are at infection risk via at least one of multiple infection mechanisms. Under natural conditions, the principal transmissio...n modes are transplacental or via one of more than 140 hematophagous triatomine bugs (Reduviidae: Triatominae). Triatomines acquire the parasite from mammal reservoirs due to their obligate blood-feeding (albeit triatomines can also feed on non-reservoir vertebrates such as birds and reptiles). The disease burden for CD in the Latin America and Caribbean region, based on disability-adjusted life-years (DALYs), is at least five times greater than that of malaria, and is approximately one-fifth that of HIV/AIDS. In recent decades, CD has extended to other continents outside natural reservoir or vector distributions due to human migration, with a minimum estimated 10 million individuals infected worldwide.
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El agente etiológico de la tuberculosis es el Mycobacterium tuberculosis o bacilo de Koch. Se trata de un bacilo aerobio estricto, ácido-alcohol resistente, sin movilidad, de crecimiento lento y que se inactiva con rayos ultravioleta y temperaturas mayores de 60°C.
Rezumat. Definiţie. Epidemiologie. Etiologie. Ciclul de transmitere al tuberculozei. Patogenie si imunitate. Leziuni morfologice în tuberculoză.Modul PNEUMOLOGIE
1 mai 2013 – 30 aprilie 2014]Creditat prin decizia CMR nr. 6653/21.12.2012
This review focusses on the interactions between the etiologic agent of Chagas disease, Trypanosoma cruzi, and its triatomine vector. The flagellate mainly colonizes the intestinal tract of the insect. The effect of triatomines on trypanosomes is indicated by susceptibility and refractoriness phenom...ena that vary according to the combination of the strains. Other effects are apparent in the different regions of the gut. In the stomach, the majority of ingested blood trypomastigotes are killed while the remaining transform to round stages. In the small intestine, these develop into epimastigotes, the main replicative stage. In the rectum, the population density is the highest and is where the infectious stage develops, the metacyclic trypomastigote. In all regions of the gut, starvation and feeding of the triatomine affect T. cruzi. In the small intestine and rectum, starvation reduces the population density and more spheromastigotes develop. In the rectum, feeding after short-term starvation induces metacyclogenesis and after long-term starvation the development of specific cells, containing several nuclei, kinetoplasts and flagella. When considering the effects of T. cruzi on triatomines, the flagellate seems to be of low pathogenicity. However, during stressful periods, which are normal in natural populations, effects occur often on the behaviour, eg, in readiness to approach the host, the period of time before defecation, dispersal and aggregation. In nymphs, the duration of the different instars and the mortality rates increase, but this seems to be induced by repeated infections or blood quality by the feeding on infected hosts. Starvation resistance is often reduced by infection. Longevity and reproduction of adults is reduced, but only after infection with some strains of T. cruzi. Only components of the surface coat of blood trypomastigotes induce an immune reaction. However, this seems to act against gut bacteria and favours the development of T. cruzi.
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En enero de 2020, el agente etiológico responsable de un grupo de casos de neumonía grave en Wuhan, China, fue identificado como un nuevo betacoronavirus (2019-nCoV), distinto del SARS-CoV y MERS-CoV (1) (2) (3). La secuencia genómica completa de este nuevo agente está disponible y se han desarr...ollado diferentes protocolos de detección, aunque aún no se han validado por completo. Sin embargo, a la luz de la posible introducción de un caso sospechoso relacionado con el 2019-nCoV en la Región de las Américas, la Organización Panamericana de la Salud / Organización Mundial de la Salud (OPS / OMS) recomienda a los Estados Miembros garantizar su identificación oportuna, el envío de las muestras a laboratorios Nacionales o de referencia y la implementación del protocolo de detección molecular para 2019-nCoV, según la capacidad del laboratorio.
Hasta la fecha, no es completamente claro el potencial patogénico ni la dinámica de transmisión del 2019nCoV. Por esta razón y a la luz del conocimiento de otros virus similares (MERS-CoV, SARS-CoV), es necesario mantener y fortalecer las medidas de bioseguridad y elementos de protección personal para el trabajo con muestras sospechosas de infección con patógenos respiratorios.
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On 31st December 2019, the World Health Organization (WHO) China Country Office was informed of cases of pneumonia of unknown etiology (unknown cause) detected in Wuhan City, Hubei Province of China. On 7th January 2020, Chinese authorities identified a new strain of Coronavirus as the causative age...nt for the disease. The virus has been renamed by WHO as SARS-CoV-2 and the disease caused by it as COVID-19. The disease since its first detection in China has now spread to over 200 countries/territories, with reports of local transmission happening in more than 160 of these countries/territories. As per WHO (as of 1st April, 2020), there has been a total of 823626 confirmed cases and 40598 deaths due to COVID-19 worldwide.
In India, as on 2nd April, 2020, 1965 confirmed cases (including 51 foreign nationals) and 50 deaths reported from 29 States/UTs. Large number of cases has been reported from Delhi, Karnataka, Kerala, Maharashtra, Rajasthan, Tamil Nadu, Telangana and Uttar Pradesh.
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Musculoskeletal disorders represent a significant problem of modern society which are more pronounced in young people and school children. Etiology of these disorders is found in inadequate ergonomic conditions, too heavy school bag, school furniture inadequate to age, poor posture, sedentary lifest...yle, reduction of physical activity and lack of exercise.
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Carlos Chagas discovered American trypanosomiasis, also named Chagas disease (CD) in his honor, just over a century ago. He described the clinical aspects of the disease, characterized by its etiological agent (Trypanosoma cruzi) and identified its insect vector. Initially, CD occurred only in Latin... America and was considered a silent and poorly visible disease. More recently, CD became a neglected worldwide disease with a high morbimortality rate and substantial social impact, emerging as a significant public health threat. In this context, it is crucial to better understand better the epidemiological scenarios of CD and its transmission dynamics, involving people infected and at risk of infection, diversity of the parasite, vector species, and T. cruzi reservoirs. Although efforts have been made by endemic and non-endemic countries to control, treat, and interrupt disease transmission, the cure or complete eradication of CD are still topics of great concern and require global attention. Considering the current scenario of CD, also affecting non-endemic places such as Canada, USA, Europe, Australia, and Japan, in this review we aim to describe the spread of CD cases worldwide since its discovery until it has become a global public health concern.
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BMC Medicine201210:107
https://doi.org/10.1186/1741-7015-10-107© Katchanov and Birbeck; licensee BioMed Central Ltd. 2012
Received: 10 July 2012Accepted: 24 September 2012Published: 24 September 2012
In 2011, the World Health Organization’s (WHO) mental health Gap Action Programme (mhGAP) r...eleased evidence-based epilepsy-care guidelines for use in low and middle income countries (LAMICs). From a
geographical, sociocultural, and political perspective, LAMICs represent a heterogenous group with significant differences in the epidemiology, etiology, and perceptions of epilepsy. Successful implementation of
the guidelines requires local adaptation for use within individual countries. For effective implementation and sustainability, the sense of ownership and empowerment must be transferred from the global health authorities to the local people. Sociocultural and financial barriers that impede the implementation of the guidelines should be
identified and ameliorated. Impact assessment and program revisions should be planned and a budget allocated to them. If effectively implemented, as intended, at the primary-care level, the mhGAP
guidelines have the potential to facilitate a substantial reduction in the epilepsy treatment gap and improve the quality of epilepsy care in resource-limited settings.
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Chagas heart disease (CHD) affects approximately 30% of patients chronically infected with the protozoa Trypanosoma cruzi. CHD is classified into four stages of increasing severity according to electrocardiographic, echocardiographic, and clinical criteria. CHD presents with a myriad of clinical man...ifestations, but its main complications are sudden cardiac death, heart failure, and stroke. Importantly, CHD has a higher incidence of sudden cardiac death and stroke than most other cardiopathies, and patients with CHD complicated by heart failure have a higher mortality than patients with heart failure caused by other etiologies. Among patients with CHD, approximately 90% of deaths can be attributed to complications of Chagas disease. Sudden cardiac death is the most common cause of death (55%-60%), followed by heart failure (25%-30%) and stroke (10%-15%). The high morbimortality and the unique characteristics of CHD demand an individualized approach according to the stage of the disease and associated complications the patient presents with. Therefore, the management of CHD is challenging, and in this review, we present the most updated available data to help clinicians and cardiologists in the care of these patients. We describe the clinical manifestations, diagnosis and classification criteria, risk stratification, and approach to the different clinical aspects of CHD using diagnostic tools and pharmacological and non-pharmacological treatments.
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Rev. Panam Salud Publica. 2017;41:e153. doi: 10.26633/RPSP.2017.153
Worldwide, over 6 million people are infected with Trypanosoma cruzi, the pathogen that causes Chagas disease (CD). In the Americas, CD creates the greatest burden in disability-adjusted life years of any parasitic infection. In Co...lombia, 437 000 people are infected with T. cruzi, of whom 131 000 suffer from cardiomyopathy. Colombia’s annual costs for treating patients with advanced CD reach US$ 175 016 000. Although timely etiological treatment can significantly delay or prevent development of cardiomyopathy—and costs just US$ 30 per patient—fewer than 1% of people with CD in Colombia and elsewhere receive it.
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