Mode de Transmission
Symptômes
Prévention
Traitement
Las infecciones de transmisión sexual (ITS) constituyen un importante problema de salud pública en todo el mundo, que afecta a la calidad de vida y se acompaña de importantes niveles de morbilidad y mortalidad. Estas infecciones influyen directamente en la salud infantil y reproductiva porque tra...en consigo infertilidad, cánceres y complicaciones del embarazo. También tienen una influencia indirecta porque facilitan la transmisión por vía sexual del virus de la inmunodeficiencia humana (VIH), pesando así igualmente en la economía de los países y las personas. Cada día, más de un millón de personas contraen una infección de transmisión sexual. Se calcula que en 2012 hubo en el mundo 357 millones de nuevos casos de ITS curables (blenorragia, clamidiasis, sífilis o tricomoniasis) que afectaron a adultos de entre 15 y 49 años de edad, entre ellos 5,6 millones de casos de sífilis. El número de casos prevalentes de sífilis asciende, según las estimaciones, a unos 18 millones.
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Prevention of nosocominal transmission of tuberculosis - overview of several national guidelines
Hyg Med 31. Jahrgang 2016 - Heft 3
La prévention de la transmission des virus dans le cadre des soins de santé nécessite d’appliquer des procédures et protocoles appelés plus généralement «contrôles». Ceux-ci, par ordre d’efficacité pour la lutte contre l’infection sont les suivants: contrôles administratifs, contr...ôles de l’environnement, contrôles techniques et équipement de protection individuelle (EPI).
Ce document récapitule les recommandations pour l’équipement de protection individuelle (EPI) que les agents de santé doivent porter pour dispenser des soins aux patients infectés par un filovirus (Ebola ou Marburg). Il est accompagné de spécifications techniques décrivant les équipements et précisant les normes recommandées
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Las olas de transmisión de la fiebre amarilla ocurridas en la Región de las Américas entre el 2016 y el 2018 causaron el mayor número de casos humanos y epizoóticos registrados en varios decenios. La fiebre amarilla es una enfermedad hemorrágica viral grave que representa un desafío para el p...rofesional de salud: exige el reconocimiento temprano de signos y síntomas muchas veces inespecíficos, que pueden parecerse a otros síndromes febriles agudos. La detección temprana de los casos sospechosos o confirmados, el monitoreo de los signos vitales y las medidas de soporte vital, y el tratamiento de la insuficiencia hepática aguda siguen siendo las estrategias recomendadas para el manejo de los casos. El presente informe es el resultado de las deliberaciones sobre la experiencia de expertos de la Región en cuanto al manejo clínico de pacientes con fiebre amarilla, especialmente en brotes y epidemias, mediante la contextualización de esa experiencia en el conjunto actual de la evidencia médico-científica y la consideración de las directrices técnicas ya disponibles en los países de la Región. Presenta flujogramas para la evaluación inicial del paciente con sospecha clínica de fiebre amarilla y sugiere un conjunto mínimo de pruebas de laboratorio que puede ser útil cuando hay pocos recursos; además, detalla aspectos de la organización de los sistemas de salud para enfrentar brotes y epidemias de fiebre amarilla.
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Due to the heterogeneous distribution of malaria transmission and its determinants, subnational tailoring (SNT) provides an analytical framework to facilitate the targeting of each population with appropriate intervention packages for maximum impact to inform national strategic planning and prioriti...zation based on resources available. The WHO Global Malaria Programme recommends the use of subnational data on disease epidemiology and other relevant local contextual factors to facilitate the process of SNT. Once the strategies and intervention mixes have been defined, programmes can proceed to the prioritization of
interventions for effective programming, based on available resources
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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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The waves of yellow fever transmission in the Region of the Americas in 2016–2018 involved the largest number of human and epizootic cases to be reported in several decades. Yellow fever is a serious viral hemorrhagic disease that poses a challenge for health professionals. It requires early recog...nition of signs and symptoms, which are often nonspecific, and it can mimic other acute febrile syndromes. Early detection of suspected or confirmed cases, monitoring of vital signs, life support measures, and treatment of acute kidney failure continue to be the recommended strategies for case management. This report is the result of discussions among experienced specialists in the Americas on the clinical management of yellow fever patients, especially during outbreaks and epidemics, in the context of current medical and scientific evidence and taking into account the technical guidelines already available in the countries of the Region. It includes flowcharts for initially addressing patients with clinical suspicion of yellow fever and proposes a minimum package of laboratory tests that may be useful in contexts where resources are limited. In addition, it considers aspects of health system organization for dealing with yellow fever outbreaks and epidemics.
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Vue d’ensemble:
Le cycle de transmission
Téniase. Les ténias vivent dans l’intestin des êtres humains. Les œufs du ténia sont libérés avec les matières fécales. En cas de défécation à l’air libre, l'environnement (en particulier les légumes et l'eau) peut être contaminé. Cysti...cercose humaine. L'ingestion d'œufs de ténia (due à une mauvaise hygiène après l'utilisation des toilettes ou à la consommation d'eau ou d'aliments contaminés), entraîne le développement de kystes parasitaires principalement dans le cerveau (provoquant notamment des crises d’épilepsie). Cysticercose porcine. Les porcs mangeant des œufs de ténia (présents dans les matières fécales ou l'environnement) développent des kystes parasitaires principalement dans les muscles (viande). La viande infectée contient des kystes parasitaires qui ne sont pas toujours faciles à voir. La consommation de viande de porc infectée, crue ou mal cuite, entraîne le développement du ténia.
Les mesures de prévention et de contrôle
Les médicaments prescrits dans les centres de santé peuvent traiter l'infection par le ténia. Lavez vos mains avec de l'eau et du savon après avoir utilisé les toilettes. Rincez soigneusement les légumes ou faites-les cuire avant de les manger. Utilisez les toilettes ou les latrines pour éviter la contamination de l'environnement, des porcs et des autres personnes. Garder les porcs dans des enclos pour les empêcher d’être infectés. Vaccinez et traitez les porcs pour prévenir l'infection. L'inspection des viandes permet d'identifier les porcs fortement infectés. Faites bien cuire la viande de porc (elle ne doit plus être rose) pour tuer le parasite.
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In an effort to limit transmission and achieve pandemic control on the continent, Africa CDC is proposing the following measures to be taken by all Member States:
Remain vigilant
Countries should adapt or adopt best practices, strategies, guidelines and recommendations proposed by the Africa CDC... and World Health Organization (WHO), aimed at limiting transmission. Measures taken should strike a balance between saving lives and minimizing the impact of the pandemic on the economy and social wellbeing of citizens.
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Several countries have demonstrated that COVID-19 transmission from one person to another can be slowed or stopped. This document has been prepared based on the evidence currently available about Coronavirus disease 2019 (COVID-19) transmission (human-to-human transmission primarily via respiratory... droplets from, or direct contact with, an infected person), and is designed to ensure that the accommodation sector can protect the health of its staff and clients.
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The role of environmental contamination in transmission of COVID-19 virus is currently not clear. This protocol has been designed to determine (viable) virus presence and persistence on fomites in various locations where a patient infected with COVID-19 is currently receiving care or being isolated,... and to understand how this may relate to COVID-19 transmission events in these settings. It is therefore important that it is done as part of a comprehensive outbreak investigation and that information obtained by environmental studies is combined with the results of epidemiological, laboratory and sequence data from COVID-19 patient investigations.
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Contact tracing may help limit COVID-19 transmission when the first cases are identified within a country but can be very resource intensive.
It is likely not to be feasible when community transmission is occurring and cases outside known transmission chains increase greatly.
Towards the Elimination of Mother-to-Child Transmission of HIV and keeping mothers Alive. 2012-2015
Visión de conjunto:
El ciclo de transmisión
Teniasis. Las tenias viven en los intestinos de las personas infectadas. Los huevos de la tenia se liberan con las heces. Si se defeca al aire libre, se puede contaminar el ambiente (incluyendo los vegetales y el agua). Cisticercosis humana. La inges...tión de huevos de la tenia (debido a una mala higiene después de ir al baño o al consumir alimentos o agua contaminados), resulta en quistes del parásito principalmente en el cerebro (causando convulsiones y epilepsia). Cisticercosis porcina. Los cerdos que ingieren huevos de tenia (presentes en las heces o en el medio ambiente) desarrollan quistes del parásito, principalmente en los músculos (carne). La carne infectada contiene quistes del parásito, que no siempre son fáciles de ver. Comer carne de cerdo infectada cruda o poco cocinada hará que las personas desarrollen tenias.
Las medidas de prevención y control
Tratar la infección por teniasis con medicamentos indicados por el personal de salud. Lavarse las manos con agua y jabón después de ir al baño. Lavar bien las verduras o cocinarlas antes de comerlas. Utilizar los baños o letrinas para evitar infectar el ambiente, los cerdos y otras personas. Mantener a los cerdos en corrales para evitar que se infecten. Vacunar y tratar a los cerdos para prevenir la infección. La inspección de la carne puede identificar a los cerdos altamente infectados. Cocinar bien la carne de cerdo (no debe verse el color rosa) para matar el parásito.
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Leishmaniasis is a complex vector-borne disease involving in its transmission several species of protozoan parasites called Leishmania, a wide variety of animal reservoirs and phlebotomine sandflies vectors. Cutaneous Leishmaniasis (CL) is the most common form of the disease, and its clinical manife...stations vary from few papules to multiple ulcers affecting the skin but also the mucous membranes, leaving permanent scars and serious disability. It is a disfiguring and stigmatizing disease that often has a devastating psychosocial and economic impact on the affected resources limited communities.
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Due to the particular Amazonian situation of vectorial transmission based mostly on the wild cycle of Trypanosoma cruzi with diversity of triatomine vectors involved in effective transmission, and the variety of eco-epidemiological situations that facilitate such transmission, the countries of the A...mazon agreed that the development and strengthening of preventive actions based on comprehensive surveillance and detection of effective vectorial transmission, based on mandatory notification of acute or chronic cases, was required. In addition, it was recommended that surveillance and prevention and/or vector control actioDue to the particular Amazonian situation of vectorial transmission based mostly on the wild cycle of Trypanosoma cruzi with diversity of triatomine vectors involved in effective transmission, and the variety of eco-epidemiological situations that facilitate such transmission, the countries of the Amazon agreed that the development and strengthening of preventive actions based on comprehensive surveillance and detection of effective vectorial transmission, based on mandatory notification of acute or chronic cases, was required.
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Workplaces outside of healthcare facilities can be also settings for transmission of COVID-19. Outbreaks of COVID-19 has been reported in various types of workplaces and job categories.
All workers should be protected from acquiring COVID-19 because of their work. The prevention of COVID-19 in ...work settings should be combined with measures for protecting physical and mental health, safety and wellbeing of workers from other occupational hazards in the operation, closures and reopening of workplaces.
This joint WHO/ILO policy brief provides a summary of the evidence for transmission of COVID-19 in general workplaces and an overview of WHO and ILO recommendations for prevention and mitigation of COVID-19 and for protecting health and safety at work in the context of the pandemic.
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Definition and categorization of the time of vertical transmission of SARS-CoV-2
Scientific report 8 February 2021
MEDBOX Issue Brief No.2.
The main route of transmission of the Sars-CoV-2 virus are small respiratory droplets. Therefore, thoroughly cleaning of hands with either alcohol-based hand rub or soap and water is one of the corner stones of basic protective measures against COVID-19 for everyone. A part...icular focus of this Issue Brief are documents for the health care sector, but also multilingual material for the public.
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