Modelling The Effects Of Immunity On Influenza Transmission - Implications For Prevention And Vaccine Development
Funder
National Health and Medical Research Council
Funding Amount
$275,767.00
Summary
There is uncertainty about how many people can be infected by a single person with influenza at the start of an outbreak. Some data suggest that a single generation of transmission can infect 10-20 other people. With such a rate of growth (ie 10-20 fold every 3 days) the spread of an influenza outbreak is virtually unstoppable. Other data suggest that each person with influenza infects less than 2 other people on average. With such a lower rate of growth, control would be more feasible. Our proj ....There is uncertainty about how many people can be infected by a single person with influenza at the start of an outbreak. Some data suggest that a single generation of transmission can infect 10-20 other people. With such a rate of growth (ie 10-20 fold every 3 days) the spread of an influenza outbreak is virtually unstoppable. Other data suggest that each person with influenza infects less than 2 other people on average. With such a lower rate of growth, control would be more feasible. Our project will use data from historic and contemporary outbreaks of influenza and build mathematical models to explain the rate of growth of an influenza outbreak in terms of: 1. The proportion of people exposed to influenza who do not become ill (although there can be evidence of infection if careful studies are made). This proportion is about 33%. 2. The proportion of people who are protected from influenza by immunity, whether induced by vaccination or by past exposure to natural influenza infection (this can vary from 0% in isolated populations which have not seen influenza for many years up to 80 or 90% in urbanised populations that are exposed to influenza almost every season). 3. Different rates of contact between different people and groups of people - some may be exposed so often that their immunity is boosted regularly without them becoming severely ill; others, living in more isolated circumstances, may be rarely exposed, but when they are, they are more likely to become severely ill. 4. The effects of influenza vaccine in inducing protective immunity - it is well known that there is good protection if the vaccine is well matched to the circulating virus. 5. The effects of live virus infection in inducing (short-lived) protection against a wider range of influenza viruses. Our model results will be used to guide vaccine design and pandemic planning.Read moreRead less
Psychosocial Disability And Return To Work In Younger Stroke Survivors
Funder
National Health and Medical Research Council
Funding Amount
$511,216.00
Summary
Each year about 12,000 Australians of working age survive a stroke. These younger survivors have responsibility for generating an income or providing care for families and state that their main objective is to return to work for financial reasons and to help rebuild confidence and independence. This observational 3 year study will determine thefactors are associated with returning to work, improving the wellbeing of thousands of stroke survivors and their families using multivariate regression.
Markers Of Androgen Action, Genetic Variation And Prostate Cancer Risk
Funder
National Health and Medical Research Council
Funding Amount
$798,907.00
Summary
This proposal aim to follow up evidence from a number of studies that genetic and non-genetic markers of hormonal action in different periods of a man's life are associated with prostate cancer risk using a collection of three large, independent epidemiologic studies on prostate cancer named the Prostate Cancer Program. A principal objective is to collect exposure data on acne and digit ratio, and genotype cases and controls across the studies of the Prostate Cancer Program for common genetic va ....This proposal aim to follow up evidence from a number of studies that genetic and non-genetic markers of hormonal action in different periods of a man's life are associated with prostate cancer risk using a collection of three large, independent epidemiologic studies on prostate cancer named the Prostate Cancer Program. A principal objective is to collect exposure data on acne and digit ratio, and genotype cases and controls across the studies of the Prostate Cancer Program for common genetic variants in 4 candidate genes in the hormonal pathway. The established risk factors for prostate cancer are only age, race and family history. We anticipate that this project will cast light on the role of hormones in prostate cancer and that we will identify new markers of risk of prostate cancer and markers of disease aggressiveness. These outcomes will help us identifying men who are at risk for prostate cancer to target screening and surveillance, and plan prevention strategies. Furthermore, they will also form the basis for research on treatment targets.Read moreRead less
Finding The Genetic Causes Of Asthma: The Australian Asthma Genetics Consortium (AAGC)
Funder
National Health and Medical Research Council
Funding Amount
$1,697,639.00
Summary
Asthma is a major burden on individuals and health systems. Despite many decades of research, no major effective new treatments for asthma have emerged recently. We will establish a large international consortium to systematically test nearly all known human genes to identify those that influence asthma susceptibility. We expect to identify pathways not previously implicated in asthma and so lead to a potential breakthrough in the development of more effective treatments.
The Role Of Interferon Signalling In The Regulation Of Stroke
Funder
National Health and Medical Research Council
Funding Amount
$620,381.00
Summary
This project focuses on the role that inflammation plays in the progression of the type of neural injury seen in stroke victims. This project targets a specific pathway that is thought to be involved in the regulation of general inflammation but has not been greatly investigated in terms of the neural injury seen in stroke. Understanding the actions of this pathway may lead to future therapies that can be used to prime the brain to react in a positive way to stroke.
Comprehensive Assessment Of Genetic And Environmental Risk Factors For Melanoma: A Population-based Family Study
Funder
National Health and Medical Research Council
Funding Amount
$150,679.00
Summary
Excessive sunlight can cause melanoma, a serious type of skin cancer. However, there are other factors including a person's genetic make-up that are thought to put some people at higher risk. Many 'healthy' people have small changes in their genes that might make them more likely to develop melanoma. We need to know more about these genetic factors. Our study will investigate how particular small genetic changes influence a person's likelihood of developing melanoma.