320 resultados para Malaria - prevention

em Deakin Research Online - Australia


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Background: Tete Province, Mozambique has experienced chronic food insecurity and a dramatic fall in livestock numbers due to the cyclic problems characterized by the floods in 2000 and severe droughts in 2002 and 2003. The Province has been a beneficiary of emergency relief programs, which have assisted &gt;22% of the population. However, these programs were not based on sound epidemiological data, and they have not established baseline data against which to assess the impact of the programs. Objective: The objective of this study was to document mortality rates, causes of death, the prevalence of malnutrition, and the prevalence of lost pregnancies after 2.5 years of humanitarian response to the crisis. Methods: A two-stage, 30-cluster household survey was conducted in the Cahora Bassa and Changara districts from 22 October to 08 November 2004. A total of 838 households were surveyed, with a population size of 4,688 people. Results: Anthropometric data were collected among children 6-59 months of age. In addition, crude mortality rates (CMRs), under five mortality rates (U5MRs), causes of deaths, and prevalence of lost pregnancies were determined among the sample population. The prevalence of malnutrition was 8.0% (95% confidence interval (CI)=6.2-9.8%) for acute malnutrition, 26.9% (95% CI=24.0-29.9%) for being underweight, and 37.0% (95% CI=33.8-40.2%) for chronic malnutrition. Boys were more likely to be underweight than were girls (odds ratio (OR)=1.34; 95% CI=1.00, 1.82; p&lt;0.05) after controlling for age, household size, and food aid beneficiary status. Similarly, children 30-59 months of age were significantly less likely to suffer from acute malnutrition (OR=0.45; 95% CI=0.26, 0.79; p&lt;0.01) and less likely to be underweight (OR=0.37; 95% CI=0.27, 0.51; p&lt;0.01) than children 6-29 months of age, after adjusting for the other, aforementioned factors. The proportion of lost pregnancies was estimated at 7.7% (95% CI=4.5-11.0%). A total of 215 deaths were reported during the year preceding the survey. Thirty-nine (18.1%) children &lt;5 years of age died. The CMR was 1.23/10 000/day (95% CI=1.08-1.38), and an U5MR was 1.03/10 000/day (95% CI=0.71-1.35). Diarrheal diseases, malaria, tuberculosis, and human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS) accounted for more than two-thirds of all deaths. Conclusions: The observed CMR in Tete Province, Mozambique is three times higher than the baseline rate for sub-Saharan Africa and 1.4 times higher than the CMR cut-off point used to define excess mortality in emergencies. The current humanitarian response in Tete Province would benefit from an improved alignment of food aid programming in conjunction with diarrheal disease control, HIV/AIDS, and malaria prevention and treatment programs. The impact of the food programs would be improved if mutually acceptable food aid programme objectives, verifiable indicators relevant to each objective, and beneficiary targets and selection criteria are developed. Periodic re-assessments and evaluations of the impact of the program and evidenced-based decision-making urgently are needed to avert a chronic dependency on food aid.<br />

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BACKGROUND: The Millennium Declaration in 2000 brought special global attention to HIV, tuberculosis, and malaria through the formulation of Millennium Development Goal (MDG) 6. The Global Burden of Disease 2013 study provides a consistent and comprehensive approach to disease estimation for between 1990 and 2013, and an opportunity to assess whether accelerated progress has occured since the Millennium Declaration. METHODS: To estimate incidence and mortality for HIV, we used the UNAIDS Spectrum model appropriately modified based on a systematic review of available studies of mortality with and without antiretroviral therapy (ART). For concentrated epidemics, we calibrated Spectrum models to fit vital registration data corrected for misclassification of HIV deaths. In generalised epidemics, we minimised a loss function to select epidemic curves most consistent with prevalence data and demographic data for all-cause mortality. We analysed counterfactual scenarios for HIV to assess years of life saved through prevention of mother-to-child transmission (PMTCT) and ART. For tuberculosis, we analysed vital registration and verbal autopsy data to estimate mortality using cause of death ensemble modelling. We analysed data for corrected case-notifications, expert opinions on the case-detection rate, prevalence surveys, and estimated cause-specific mortality using Bayesian meta-regression to generate consistent trends in all parameters. We analysed malaria mortality and incidence using an updated cause of death database, a systematic analysis of verbal autopsy validation studies for malaria, and recent studies (2010-13) of incidence, drug resistance, and coverage of insecticide-treated bednets. FINDINGS: Globally in 2013, there were 1&middot;8 million new HIV infections (95% uncertainty interval 1&middot;7 million to 2&middot;1 million), 29&middot;2 million prevalent HIV cases (28&middot;1 to 31&middot;7), and 1&middot;3 million HIV deaths (1&middot;3 to 1&middot;5). At the peak of the epidemic in 2005, HIV caused 1&middot;7 million deaths (1&middot;6 million to 1&middot;9 million). Concentrated epidemics in Latin America and eastern Europe are substantially smaller than previously estimated. Through interventions including PMTCT and ART, 19&middot;1 million life-years (16&middot;6 million to 21&middot;5 million) have been saved, 70&middot;3% (65&middot;4 to 76&middot;1) in developing countries. From 2000 to 2011, the ratio of development assistance for health for HIV to years of life saved through intervention was US$4498 in developing countries. Including in HIV-positive individuals, all-form tuberculosis incidence was 7&middot;5 million (7&middot;4 million to 7&middot;7 million), prevalence was 11&middot;9 million (11&middot;6 million to 12&middot;2 million), and number of deaths was 1&middot;4 million (1&middot;3 million to 1&middot;5 million) in 2013. In the same year and in only individuals who were HIV-negative, all-form tuberculosis incidence was 7&middot;1 million (6&middot;9 million to 7&middot;3 million), prevalence was 11&middot;2 million (10&middot;8 million to 11&middot;6 million), and number of deaths was 1&middot;3 million (1&middot;2 million to 1&middot;4 million). Annualised rates of change (ARC) for incidence, prevalence, and death became negative after 2000. Tuberculosis in HIV-negative individuals disproportionately occurs in men and boys (versus women and girls); 64&middot;0% of cases (63&middot;6 to 64&middot;3) and 64&middot;7% of deaths (60&middot;8 to 70&middot;3). Globally, malaria cases and deaths grew rapidly from 1990 reaching a peak of 232 million cases (143 million to 387 million) in 2003 and 1&middot;2 million deaths (1&middot;1 million to 1&middot;4 million) in 2004. Since 2004, child deaths from malaria in sub-Saharan Africa have decreased by 31&middot;5% (15&middot;7 to 44&middot;1). Outside of Africa, malaria mortality has been steadily decreasing since 1990. INTERPRETATION: Our estimates of the number of people living with HIV are 18&middot;7% smaller than UNAIDS's estimates in 2012. The number of people living with malaria is larger than estimated by WHO. The number of people living with HIV, tuberculosis, or malaria have all decreased since 2000. At the global level, upward trends for malaria and HIV deaths have been reversed and declines in tuberculosis deaths have accelerated. 101 countries (74 of which are developing) still have increasing HIV incidence. Substantial progress since the Millennium Declaration is an encouraging sign of the effect of global action. FUNDING: Bill &amp; Melinda Gates Foundation.

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Part 1 Obesity&nbsp;<br />Part 2 Biology of obesity<br />Part 3 Obesity and disease&nbsp;<br />Part 4 Childhood obesity&nbsp;<br />Part 5 Adult obesity&nbsp;<br />Part 6 Management&nbsp;<br />Part 7 Environmental and policy approaches <br />29 Obesity in Asian populations 431 <br />30 Environmental and policy approaches: alternative methods 443 <br />31 A comprehensive approach to obesity prevention 456 <br /><br />

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Designing and implementing fall intervention studies in acute care settings presents researchers with a number of challenges. To date, there are no fall prevention interventions that have unequivocal empirical support in these settings. Based on the best available evidence a multistrategy fall prevention program was implemented using a pretest&ndash;post-test design over a 12-month period. The results indicated no reduction in the fall rate. Contrary to the expected result, the fall rate increased post the implementation of the multistrategy fall prevention program. To assist other researchers understand the contextual and methodological barriers to conducting fall prevention research in acute care settings, this paper discusses the difficulties experienced in this study.<br />

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Children's eating behaviours are fundamental to their health. Dietary surveys indicate that children's food consumption is likely to promote a range of diet-related diseases, including overweight and obesity, which are associated with a range of psychosocial and physical disorders. With the prevalence of overweight and obesity rapidly increasing, opportunities for informed prevention have become a focus of strategy. Diet is recognised as important in the genesis of obesity. We present data that demonstrate that eating behaviours are likely to be established early in life and may be maintained into adulthood. We review literature that shows that children's eating behaviours are influenced by the family food environment. These findings suggest that the family environment should be considered in developing obesity prevention strategy for children, yet the current strategy focuses primarily on the school environment. Those factors in the family environment that appear to be important include: parental food preferences and beliefs, children's food exposure; role modelling; media exposure; and child-parent interactions around food. However, the existing data are based on small scale and unrepresentative US samples. At a population level, we have few insights regarding family food environments and consequently little information about how such environments influence children's eating behaviours and thus their risk for obesity. We suggest research that may promote a better understanding of the role of family food environments as determinants of children's eating behaviour, and consider the implications for obesity prevention in Australia. (Aust J Nutr Diet 2001;58:19-25) <br />

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<b>OBJECTIVE: </b>To investigate lay perceptions of the causes and prevention of obesity among primary school children. <br /><br /><b>DESIGN:</b> A cross-sectional survey of randomly selected sample of adults in a shopping centre. <br /><br /><b>SUBJECTS:</b> 315 adults in Melbourne, Australia. <br /><br /><b>MEASUREMENTS:</b> Subjects completed a self-completion questionnaire, in which they rated the importance of 25 possible causes of obesity and the importance of 13 preventive measures on four-point scales: not important; quite important; very important; extremely important. Demographic information about the respondents' age, sex, marital status, education level and parental status was also collected. <br /><br /><b>RESULTS:</b> The most important reported causes of childhood obesity were related to overconsumption of unhealthy food, parental responsibility, modern technology and the mass media. The most popular prevention activities were associated with specific actions aimed at children. Principal components analysis of the causes data revealed eight factors, provisionally named: parental responsibility, modern technology and media, overconsumption of unhealthy food, children's lack of knowledge and motivation, physical activity environment, lack of healthy food, lack of physical activity and genes. Two prevention factors were also derived, named government action and children's health promotion. Parents saw modern technology and media, and government activities as more important causes, and government policy as a more important means of prevention than nonparents and men. Women's responses tended to be similar to those of parents. There were few educational differences, although nontertiary educated respondents reported that modern technology and media were more important causes of obesity than did the tertiary educated.<br /><br /> <b>CONCLUSION:</b> The findings suggest that the public appears to hold quite sophisticated views of the causes and prevention of children's obesity. They suggest that a number of prevention strategies would be widely supported by the public, especially by parents.<br /><br />

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<b>Objective:</b> To review the evidence on the diet and nutrition causes of obesity and to recommend strategies to reduce obesity prevalence.<br /><b>Design: </b>The evidence for potential aetiological factors and strategies to reduce obesity prevalence was reviewed, and recommendations for public health action, population nutrition goals and further research were made.<br /><b>Results:</b> Protective factors against obesity were considered to be: regular physical activity (convincing); a high intake of dietary non-starch polysaccharides (NSP)/fibre (convincing); supportive home and school environments for children (probable); and breastfeeding (probable). Risk factors for obesity were considered to be sedentary lifestyles (convincing); a high intake of energy-dense, micronutrient-poor foods (convincing); heavy marketing of energy-dense foods and fast food outlets (probable); sugar-sweetened soft drinks and fruit juices (probable); adverse social and economic conditions&mdash;developed countries, especially in women (probable).<br />A broad range of strategies were recommended to reduce obesity prevalence including: influencing the food supply to make healthy choices easier; reducing the marketing of energy dense foods and beverages to children; influencing urban environments and transport systems to promote physical activity; developing community-wide programmes in multiple settings; increased communications about healthy eating and physical activity; and improved health services to promote breastfeeding and manage currently overweight or obese people.<br /><b>Conclusions:</b> The increasing prevalence of obesity is a major health threat in both low- and high income countries. Comprehensive programmes will be needed to turn the epidemic around.<br />

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Obesity as a major public health and economic problem has risen to the top of policy and programme agendas in many countries, with prevention of childhood obesity providing a particularly compelling mandate for action. There is widespread agreement that action is needed urgently, that it should be comprehensive and sustained, and that it should be evidence-based. While policy and programme funding decisions are inevitably subject to a variety of historical, social, and political influences, a framework for defining their evidence base is needed. This paper describes the development of an evidence-based, decision-making framework that is particularly relevant to obesity prevention. Building upon existing work within the fields of public health and health promotion, the Prevention Group of the International Obesity Task Force (IOTF) developed a set of key issues and evidence requirements for obesity prevention. These were presented and discussed at an IOTF workshop in April 2004 and were then further developed into a practical framework. The framework is defined by five key policy and<br />programme issues that form the basis of the framework. These are: (i) building a case for action on obesity; (ii) identifying contributing factors and points of intervention; (iii) defining the opportunities for action; (iv)evaluating potential interventions; and (v) selecting a portfolio of specific policies, programmes, and actions. Each issue has a different set of evidence requirements and analytical outputs to support policy and programme decision-making. Issue 4 was identified as currently the most problematic because of the relative lack of efficacy and effectiveness studies. Compared with clinical decision-making where the evidence base is dominated by randomized controlled trials with high internal validity, the evidence base for obesity prevention needs many different types of evidence and often needs the informed opinions of stakeholders to ensure external validity and contextual relevance.

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The monopoly granted through intellectual property rights can lead to abuses ofsuch monopoly. The TRIPS Agreement recognizes such abuses along with the fact that competition policy can play a significant role in dealing with such abuses. The use of competition policy to deal with the abuse of IP monopolies reguires a discussion ofabuse of the dominant position, definition ot market and substitutability of products and whether the<br />patenting monopoly automatically puts the right holder in the dominant position. The issue of parallel trade and exhaustion of rights also has anti-competitive implications. The introduction of discriminatory pricing along with any ban on parallel trade would lead to absolute market control, market segregation and market exclusion by the monopolistic industries. [JEL Classiffication: K21, K33]<br />

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The current study evaluated a program to improve the body image and positive and negative affect of children. Participants were 368 children aged 8&ndash;12 years. The results demonstrated that boys placed more importance on and were less satisfied with their muscles; girls were less satisfied with their weight and the importance of weight increased with increasing age. Children with a large BMI were less satisfied with their weight. Boys in the intervention group showed reduced levels of negative affect over time. Further research is required to develop prevention and intervention programs to lower the effects of body dissatisfaction and negative affect among children. <br /><br />

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<b>Objective</b> To pilot-test a brief written prescription recommending lifestyle changes delivered by general practitioners (GPs) to their patients.<br /><br /><b>Design</b> The Active Nutrition Script (ANS) included five nutrition messages and personalised exercise advice for a healthy lifestyle and/or the prevention of weight gain. GPs were asked to administer 10 scripts over 4 weeks to 10 adult patients with a body mass index (BMI) of between 23 and 30 kg m&minus; 2. Information recorded on the script consisted of patients' weight, height, waist circumference, gender and date of birth, type and frequency of physical activity prescribed, and the selected nutrition messages. GPs also recorded reasons for administering the script. Interviews recorded GPs views on using the script.<br /><br /><b>Setting </b>General practices located across greater Melbourne.<br /><b><br />Subjects and results</b> Nineteen GPs (63% female) provided a median of nine scripts over 4 weeks. Scripts were administered to 145 patients (mean age: 54 &plusmn; 13.2 years, mean BMI: 31.7 &plusmn; 6.3 kg m&minus; 2; 57% female), 52% of whom were classified as obese (BMI &gt;30 kg m&minus; 2). GPs cited &lsquo;weight reduction&rsquo; as a reason for writing the script for 78% of patients. All interviewed GPs (90%, n = 17) indicated that the messages were clear and simple to deliver.<br /><b><br />Conclusions</b> GPs found the ANS provided clear nutrition messages that were simple to deliver. However, GPs administered the script to obese patients for weight loss rather than to prevent weight gain among the target group. This has important implications for future health promotion interventions designed for general practice.<br />