Soil-transmitted helminths are a group of intestinal worms that include Ascaris lumbricoides (giant roundworm), Trichuris trichiura (whipworm), and Ancylostoma spp. (A. duodenale, A. ceylanicum) and Necator americanus (hookworms). Despite the clear biological differences among the different species,... their transmission is characterized by the same sequence of events: (i) infected individuals excrete worm eggs through their stool in soil; (ii) under optimal conditions of moisture and temperature the excreted eggs develop into infectious stages; and (iii) finally, infection occurs through oral uptake (Ascaris, Ancylostoma and Trichuris) or skin penetration (Ancylostoma and Necator) of these infectious stages (embryonated eggs and third stage larvae) that reside in the soil and/or in the environment (referring to their common name).
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In the strategies for effective infection prevention and control (IPC), what does triage entail at hospitals?
Triage includes screening at the entrance, identification of cases and isolation if necessary. There should be a triage (screening) area where visitors to the hospital are interviewed using... standard questionnaires to identify symptoms, along with temperature checks and documentation of contacts. Individuals who meet the case definition for COVID-19 should be isolated immediately while arrangement is being made for swab (sample) collection from the patient. (See the WHO guidance on triage).
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Climate change also affects human health by increasing the frequency and intensity of extreme heat events. Increases in
the overall temperature of the atmosphere and oceans associated with climate change cause changes in wind, moisture, and heat circulation patterns. These changes contribute to shi...fts in extreme weather events, including extreme heat events.
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Environmental Research Volume 151, November 2016, Pages 115-123
Dengue is the world’s most important arboviral disease in terms of number of people affected. Over the past 50 years, incidence increased 30-fold: there were approximately 390 million infections in 2010. Globalization, trade, travel,... demographic trends, and warming temperatures are associated with the recent spread of the primary vectors Aedes aegypti and Aedes albopictus and of dengue. Overall, models project that new geographic areas along the fringe of current geographic ranges for Aedes will become environmentally suitable for the mosquito’s lifecycle, and for dengue transmission. Many endemic countries where dengue is likely to spread further have underdeveloped health systems, increasing the substantial challenges of disease prevention and control. Control focuses on management of Aedes, although these efforts have typically had limited effectiveness in preventing outbreaks. New prevention and control efforts are needed to counter the potential consequences of climate change on the geographic range and incidence of dengue, including novel methods of vector control and dengue vaccines.
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Este manual está dirigido al personal de salud que trabaja en establecimientos periféricos y que utiliza pruebas de diagnóstico rápido (PDR) para la malaria. Proporciona instrucciones prácticas para garantizar el buen funcionamiento de estas pruebas en condiciones muchas veces difíciles, espec...ialmente en zonas remotas y de clima cálido.
Se explican procedimientos clave para la recepción de las pruebas (verificación de daños, caducidad, condiciones de transporte), el almacenamiento (selección del lugar más fresco, control de temperatura, ventilación, uso de métodos sencillos como depósitos en el suelo o contenedores que enfrían por evaporación) y el transporte seguro, ya sea por tierra o agua, con especial atención a evitar la exposición al calor.
Además, el manual incluye pautas para la gestión de inventarios, la rotación de existencias (usando primero las pruebas con vencimiento más próximo), y el registro del uso para evitar desperdicios y asegurar la disponibilidad continua.
Finalmente, se aborda la gestión de desechos peligrosos y generales generados por el uso de las pruebas, promoviendo su separación adecuada, almacenamiento seguro y eliminación apropiada (como fosas protegidas o incineración controlada), con el fin de proteger al personal y a la comunidad.
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Este manual ofrece directrices prácticas para el manejo adecuado de las pruebas de diagnóstico rápido (PDR) de la malaria, destinadas al personal que trabaja en almacenes centrales, regionales y periféricos del sistema de salud. Su propósito principal es garantizar la integridad y eficacia de e...stas pruebas desde su recepción hasta su uso final.
Se destacan aspectos clave como la correcta recepción e inspección visual de los envíos, la verificación de daños, caducidad y componentes faltantes. Se proporcionan recomendaciones detalladas para el almacenamiento, incluyendo el control riguroso de la temperatura (idealmente entre 2 °C y 30 °C), la ventilación de los espacios, y el apilamiento seguro de las cajas.
Además, el manual aborda la gestión de inventarios con el uso de tarjetas de control, la rotación de productos bajo el principio “primero en caducar, primero en salir” (PEPS), y la realización de inventarios físicos regulares. También se detallan las buenas prácticas para el transporte por tierra, aire y agua, subrayando la importancia de proteger las pruebas del calor y de planificar bien los envíos.
Por último, se abordan medidas para la correcta gestión de residuos generados por las PDR, diferenciando entre desechos peligrosos (como lancetas, dispositivos usados y guantes contaminados) y desechos generales. Se incluyen recomendaciones para su separación, almacenamiento temporal y eliminación segura, adaptadas a contextos con recursos limitados.
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PNAS | March 4, 2014 | vol. 111 | no. 9
Malaria is an important disease that has a global distribution and significant health burden. The spatial limits of its distribution and seasonal activity are sensitive to climate factors, as well as the local capacity to control the disease. Malaria is also ...one of the few health outcomes that has been modeled by more than one research group and can therefore facilitate the first model intercomparison for health impacts under a future with climate change. We used bias-corrected temperature and rainfall simulations from the Coupled Model Intercomparison Project Phase 5 climate models to compare the metrics of five statistical and dynamical malaria impact models for three future time periods (2030s, 2050s, and 2080s). We evaluated three malaria outcome metrics at global and regional levels: climate suitability, additional population at risk and additional person-months at risk across the model outputs. The malaria projections were based on five different global climate models, each run under four emission scenarios (Representative Concentration Pathways, RCPs) and a single population projection. We also investigated the modeling uncertainty associated with future projections of populations at risk for malaria owing to climate change. Our findings show an overall global net increase in climate suitability and a net increase in the population at risk, but with large uncertainties. The model outputs indicate a net increase in the annual person-months at risk when comparing from RCP2.6 to RCP8.5 from the 2050s to the 2080s. The malaria outcome metrics were highly sensitive to the choice of malaria impact model, especially over the epidemic fringes of the malaria distribution.
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Drugs and medical supplies are dispensed at the cutting edge level of the interface between the public health system and the people. Availability or lack of it brings either credit or discredit to the public health system. The primary reason for holding stocks of medicines and medical supplies in a ...proper scientific manner is to ensure continuous and uninterrupted availability to prevent stock-outs, especially of critical items of supply while at the same time ensuring that stocks of medicines do not get expired. An efficient inventory management is a pre-requisite for optimal stock management. It enables the management of health facilities to know the current pattern of consumption of drug trends over a period of time and also variances. The environmental control of the drugs and other medical supplies play an important role to keep the products' efficacy intact. Some medicines and vaccines need special storage temperature, otherwise, there may be wastage. The quality of the medicines can be adversely affected by poor storage, transportation and distribution. Thus, maintaining proper storage condition for health commodities is vital for ensuring their quality. So, by this training, CDMU wants to educate different people dealing with medicines and equip them for the roles they have to perform efficiently so that the wastage does not take place or can be minimized.
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A WHO-UNICEF joint statement encouraging greater health commodity supply chain integration for temperature-sensitive pharmaceuticals where appropriate, 19 November 2020
Last revised 2015.
Original Word document on: http://www.epnetwork.org/Resources/Standard%20Operating%20Procedure/Temperature%20chart_Form.doc
: Déclaration conjointe de l’OMS et de l’UNICEF encourageant une meilleure intégration des produits pharmaceutiques sensibles à la température dans la chaîne d’approvisionnement en produits de santé dans les cas appropriés, 19 novembre 2020
Dengue is a mosquito-borne viral disease that occurs mainly in the tropics and subtropics but has a high potential to spread to new areas. Dengue infections are climate sensitive, so it is important to better understand how changing climate factors affect the potential for geographic spread and futu...re dengue epidemics. Vectorial capacity (VC) describes a vector's propensity to transmit dengue taking into account human, virus, and vector interactions. VC is highly temperature dependent, but most dengue models only take mean temperature values into account. Recent evidence shows that diurnal temperature range (DTR) plays an important role in influencing the behavior of the primary dengue vector Aedes aegypti. In this study, we used relative VC to estimate dengue epidemic potential (DEP) based on the temperature and DTR dependence of the parameters of A. aegypti. We found a strong temperature dependence of DEP; it peaked at a mean temperature of 29.3°C when DTR was 0°C and at 20°C when DTR was 20°C. Increasing average temperatures up to 29°C led to an increased DEP, but temperatures above 29°C reduced DEP. In tropical areas where the mean temperatures are close to 29°C, a small DTR increased DEP while a large DTR reduced it. In cold to temperate or extremely hot climates where the mean temperatures are far from 29°C, increasing DTR was associated with increasing DEP. Incorporating these findings using historical and predicted temperature and DTR over a two hundred year period (1901-2099), we found an increasing trend of global DEP in temperate regions. Small increases in DEP were observed over the last 100 years and large increases are expected by the end of this century in temperate Northern Hemisphere regions using climate change projections. These findings illustrate the importance of including DTR when mapping DEP based on VC.
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IPC Training manual Day 2
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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Although Shiga toxin-producing Escherichia coli (STEC) have been isolated from a variety of food production animals, they are most commonly associated with ruminants from which we derive meat and milk. Because of the widespread and diverse nature of ruminant-derived food production, coupled with the... near ubiquity of STEC worldwide, there is no single definitive solution for controlling STEC that will work alone or in all situations. Instead, the introduction of multiple interventions applied in sequence, as a “multiple-hurdle scheme” at several points throughout the food chain (including processing, transport and handling) will be most effective.
This report summarizes the review and evaluation of interventions applied for the control of STEC in cattle, raw beef and raw milk and raw milk cheese manufactured from cows’ milk, and also evaluates available evidence for other small ruminants, swine and other animals. The information is presented from primary production, to the end of processing, providing the reader with information on the currently available interventions based on the latest scientific evidence.
This work was undertaken to support the development of guidelines for the control of STEC in beef, raw milk and cheese produced from raw milk by the Codex Committee on Food Hygiene (CCFH).
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