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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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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22 April 2022, This document provides updated interim recommendations on the use of masks by health workers providing care to patients with suspected or confirmed COVID-19. This update is prompted by new evidence around mask use and COVID-19 transmission, as well as the emergence of variants of conc...ern including Omicron. Masks continue to be a critical tool to prevent the spread of COVID-19. These interim guidelines supersede the recommendations provided in the WHO recommendations on mask use by health workers, in light of the Omicron variant of concern published on 22 December 2022.
WHO continually evaluates the emerging evidence and will review these interim recommendations within two months and issue new guidance as needed.
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Constraints, Technologies, Policies and Processes
The Government recognizes the critical role of the built environment in addressing climate change and environmental degradation. To this end, it has identified and empowered the Kenya Building Research Centre to champion and coordinate the government’s green building agenda in relation to climate ...change mitigation and adaptation as stipulated in the Centre’s Strategic Plan (2017/2018 – 2021/2022)
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Thesis presented in partial fulfilment of the requirements for the degree of Master of Nursing Science in the Faculty of Health Sciences at Stellenbosch University.
The mobile clinic health care services fulfil an essential role in delivering primary health care to the dwellers in the rural commun...ities of the Western Cape. However, occupational health and safety, as well as quality assurance are issues that need to be addressed urgently. It is thus recommended that policy makers take cognizance of the specific needs of every individual mobile clinic team.
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To test for ethnic discrimination in access to outpatient health care services, we carry out
an email-correspondence study in Germany. We approach 3,224 physician offices in the 79
largest cities in Germany with fictitious appointment requests and randomized patients’
characteristics. We find t...hat patients’ ethnicity, as signaled by distinct Turkish versus Ger-
man names, does not affect whether they receive an appointment or wait time. In contrast,
patients with private insurance are 31 percent more likely to receive an appointment. Hold-
ing a private insurance also increases the likelihood of receiving a response and reduces the
wait time. This suggests that physicians use leeway to prioritize privately insured patients
to enhance their earnings, but they do not discriminate persons of Turkish origin based
on taste. Still, their behavior creates means-based barriers for economically disadvantaged
groups.
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Viral hepatitis is defined as inflammation of the liver cells due to viral infection. The burden of liver disease in South Africa is mostly underestimated as viral hepatitis, in particular chronic infection, is a silent and neglected cause of morbidity and mortality. However, the burden of disease i...s likely substantial given the prevalence of chronic viral hepatitis. This burden is further compounded by the lack of screening and access to care and treatment as well as inadequate disease surveillance, human and financial resources.
The National Guidelines for the Management of Viral Hepatitis were developed, with the purpose to:
inform healthcare workers in the public and private sectors about the disease, its epidemiology in South Africa and current methods of diagnosis and therapy
strengthen the healthcare response to viral hepatitis
empower communicable diseases workers and stakeholders to make informed decisions regarding appropriate and cost effective interventions
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In the light of the transmissibility of coronaviruses, and the global experience with MERS-CoV (ongoing) and SARS in 2003 which were also caused by coronaviruses, South African authorities have compiled this guideline document to support surveillance, case finding, diagnosis, management and public h...ealth responses to cases under investigation.
*Please note*
The interim guidelines are based on what is currently known about the Coronavirus Disease 2019 (COVID-19). The National Department of Health (NDOH) and National Institute for Communicable Diseases will update these interim guidelines as needed and as additional information becomes available.
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In the event of an accident or medical emergency, First Aid saves lives. Keeping the patient alive and safe until the arrival of expert professional help is a vital part of the chain of care which leads to recovery. The principle of First Aid must be simple skills, clearly taught and capable of bein...g performed in a stressful situation by those with no medical training. This manual is intended to offer a basic level of First Aid for members of the general public.
The contents of this manual are offered as a first edition of European First Aid Guidelines for general use. As such they are compatible with current practise, with other specialist guidelines (for example regarding the management of burns) and with the evidence base where one exists. These guidelines will be updated on a regular basis by the JOIN Clinical Working Group.
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