Injecting Drug Users: Social Networks And Molecular Epidemiology Of The Hepatitis C Virus
Funder
National Health and Medical Research Council
Funding Amount
$543,868.00
Summary
The hepatitis C virus (HCV) continues to spread among injecting drug users (IDUs) in Australia at a very high rate, despite success in preventing the spread of HIV in the same groups; the complete reasons for this remain unclear. There is an urgent need for the HCV epidemic among IDUs to be contained. To do so, we must better understand the ways in which it is spreading among IDUs. Much is known about risk behaviours of individual IDUs and how they contribute to HCV transmission; much less is kn ....The hepatitis C virus (HCV) continues to spread among injecting drug users (IDUs) in Australia at a very high rate, despite success in preventing the spread of HIV in the same groups; the complete reasons for this remain unclear. There is an urgent need for the HCV epidemic among IDUs to be contained. To do so, we must better understand the ways in which it is spreading among IDUs. Much is known about risk behaviours of individual IDUs and how they contribute to HCV transmission; much less is known about how these behaviours are modified by the influence of the IDUs peer group, especially their immediate and intimate social networks. Despite its importance in influencing attitudes and behaviours, and therefore HCV transmission, this has never been studied in Australia, nor, in relation to HCV, in the world. We hope that by studying social and risk networks of IDUs we shall discover new ways in which control of the HCV epidemic can be achieved in Australia. We intend to do this among two groups of young IDUs, one of Vietnamese ethnicity, located in the one suburb of Melbourne. By using field techniques for gathering information (ethnography), and sophisticated analytic techniques to understand how these networks are formed and influence behaviours, we hope to be able to identify interventions which work at the level of the social group rather than the individual in bringing about the behaviour change necessary to prevent HCV transmission. To ensure that the risk networks we describe are as influential as they appear, and to discover more about the variability of HCV, we will also be investigating the relationship between the various strains of HCV in members of the IDU networks, particularly as another measure of the connectedness of networks and network members. This will be done using sophisticated genetic analysis of the HCV obtained from network members by blood test.Read moreRead less
Predicting The Risk Of Invasive Candidiasis In Critically Ill Patients
Funder
National Health and Medical Research Council
Funding Amount
$1,258,287.00
Summary
Invasive fungal infections (such as bloodstream infections) are a serious and increasing problem for critically ill patients managed in the Intensive Care Unit. Outcomes can be improved by giving early treatment only to those at highest risk of fungal infection. Our aim is to easily identify those at high-risk. Patients treated in seven major ICUs will be observed and a simple and accurate method of scoring their illness characteristics and amount-types of fungi present will be developed.
Early Predictors And Body Composition Changes Associated With Adiposity Rebound
Funder
National Health and Medical Research Council
Funding Amount
$201,650.00
Summary
Overweight and obesity rates are increasing in children, and overweight children have higher risk of adult obesity and therefore diseases including heart attack, stroke and diabetes. The preschool years may offer opportunities to divert children from the path to obesity, before poor physical activity and nutritional habits become firmly established. Adiposity rebound is the time in a child's life (usually around 5 to 6 years of age) when body mass index (BMI) begins to increase after a steady de ....Overweight and obesity rates are increasing in children, and overweight children have higher risk of adult obesity and therefore diseases including heart attack, stroke and diabetes. The preschool years may offer opportunities to divert children from the path to obesity, before poor physical activity and nutritional habits become firmly established. Adiposity rebound is the time in a child's life (usually around 5 to 6 years of age) when body mass index (BMI) begins to increase after a steady decline in BMI in the preschool years. Early adiposity rebound is associated with increased BMI in later life. We don't yet know whether the early adiposity rebound causes the higher BMI, or whether it is simply an early sign of an already-established pathway of behavioural and environmental risk. We need a much better understanding of predictors of early adiposity rebound and the changes that occur to determine if age at adiposity rebound is a modifiable risk factor for adult obesity. This study will document the process and timing of adiposity rebound and the changes in percent body fat and lean body mass that occur during that time. We will also determine whether risk and protective factors for early adiposity rebound and overweight at age 6 years are the same or different. We will study over 400 children on whom extensive data have been collected since birth, including period of gestation, birth weight and length. At various stages during their first two years of life, height, weight, feeding patterns and development were recorded. We will measure BMI and perform bioimpedance analysis (BIA) on these children six times between 4 and 6 years of age. BIA provides a measure of body fat and lean mass that is well accepted by children. This will help determine the relationship between changing BMI at different ages and the fat-to-lean mass ratios associated with those changes. This study is the first to consider body composition changes during adiposity rebound.Read moreRead less