Resolving Human Immunodeficiency Virus (HIV) Transmission
Funder
National Health and Medical Research Council
Funding Amount
$745,213.00
Summary
To increase the breadth of HIV prevention strategies, it is imperative that we biologically understand how HIV enters our bodies. Through two unique clinical cohorts, we will determine why circumcision is protective and how a commonly acquired sexual transmitted infection (human papilloma virus) can increase HIV transmission.
Understanding The Likely Population Impact Of New And Improved Influenza Vaccines
Funder
National Health and Medical Research Council
Funding Amount
$358,678.00
Summary
Influenza causes a large burden of death and disease each year, as well as disruptive pandemics. Vaccines that could protect against more than one season�s flu strains (including new pandemic viruses) would be highly desirable, and may be on the horizon. Our aim is to understand the likely impact of these new vaccines on the way flu viruses spread between people, and change from one season to the next. This information is needed to justify their introduction, and inform their best use.
Are Routine Healthcare Worker Hand Hygiene Protocols (soap/water, Alcohol-based Handrub) Effective Against Influenza?
Funder
National Health and Medical Research Council
Funding Amount
$99,950.00
Summary
Although influenza is mainly spread from person-to-person by aerosol transmission (coughing, sneezing etc), there is growing evidence that spread also occurs on the hands of infected patients and their carers (non-aerosol transmission). Because of this, health authorities now recommend the use of careful hand hygiene (HH: hand washing with soap-water or use of alcohol-based hand rub solutions [ABHRS]) by healthcare workers (HCWs) and patients. However, despite these recommendations, there are no ....Although influenza is mainly spread from person-to-person by aerosol transmission (coughing, sneezing etc), there is growing evidence that spread also occurs on the hands of infected patients and their carers (non-aerosol transmission). Because of this, health authorities now recommend the use of careful hand hygiene (HH: hand washing with soap-water or use of alcohol-based hand rub solutions [ABHRS]) by healthcare workers (HCWs) and patients. However, despite these recommendations, there are no data that demonstrate the effectiveness of such HH protocols. This project aims to assess the clinical effectiveness of four HH protocols (handwashing with soap-water, alcohol-only ABHRS, two alcohol-chlorhexidine ABHRS) in common use in Australian hospitals to see which protocol is best for killing influenza virus. We also plan to assess how long influenza virus remains infectious on HCWs hands if they fail to use appropriate HH. Since it could be dangerous to use live avian influenza virus in this study, we plan to use the H1N1 influenza A strain that was a component of the influenza vaccine administered to most HCWs in 2005. Thus, only HCWs with protective immunity to H1N1 will participate in a series of tests in which they will have their hands artificially contaminated with a known concentration of live H1N1 before using either no HH, or one of the four HH protocols, followed by an assessment (virus culture and molecular tests) or the amount of H1N1 surviving on their hands after each protocol. Some selected HCWs will also have the amount of surviving virus assessed 30 and 60 minutes after contamination to identify how long H1N1 survives on HCWs hands should they not use appropriate HH. Following all protocols, all HCWs will perform a detailed surgical scrub (similar to surgeons before an operation) to make certain that all H1N1 is killed to avoid any infection of themselves or their contacts. The study will be undertaken in special, secure, negative-pressure rooms at Austin Hospital away from patient care areas to provide maximum safety conditions. All virus culture and molecular tests will be performed in the virus Identification Laboratory at the Victorian Infectious Disease Reference Laboratory (VIDRL), Melbourne. Results of the study should help identify which HH protocol provides the most protection against influenza.Read moreRead less
Natural Variation And Genetic Basis Of Dengue Virus Transmission Rate In Australian Mosquitoes
Funder
National Health and Medical Research Council
Funding Amount
$680,088.00
Summary
Dengue fever outbreaks occur in Australia when infected travelers enter the country and are bitten by local mosquitoes. Here we examine the degree of genetic compatibility between mosquitoes and incoming dengue viruses that may affect disease risk for humans. We will identify the mosquito genes that determine the insect’s capacity to transmit dengue virus and develop a geographic map of transmissibility for a range of different dengue strains across Australian populations of the insect.
The Human Immunodeficiency Virus (HIV) is a virus that infects and kills the cells of your immune system. This infection eventually leads to the Acquired Immune Deficiency Syndrome (AIDS). An important aspect in preventing infection is to study how HIV enters immune cells and how infection spreads. Our lab is researching drugs to block the entry of HIV in immune cells, which can hopefully be used together with existing anti-HIV drugs to slow down the spread of the virus and the onset of AIDS.
Viral Load, HIV Treatment, And HIV Transmission In Serodiscordant Male Homosexual Couples
Funder
National Health and Medical Research Council
Funding Amount
$1,452,298.00
Summary
HIV treatment reduces the concentration of HIV in the body. In heterosexuals, current studies will determine the effectiveness of HIV treatment in preventing onwards HIV transmission. In contrast, there has been very little such research in homosexual men, who comprise 70% or more of people with HIV in Australia. This study will follow for four years over 200 male homosexual couples in which one is HIV positive and the other negative, to investigate the role of HIV treatment in HIV prevention.
Identification And Chracterization Of Host Cell Receptors For Influenza A Viruses
Funder
National Health and Medical Research Council
Funding Amount
$92,314.00
Summary
Following inhalation, influenza virus infects cells of the immune system and epithelial cells lining the airways. Currently, it is not clear how influenza virus attaches to and infects these cells. This project will use new ways to identify receptors for influenza virus on human epithelial cells and immune cells. The ultimate identification of these receptors would have important implications for the development of new drugs to treat influenza virus infections.
HIV/AIDS remains a major global threat with ?37 million individuals living with HIV in 2014. Antiretroviral drugs have transformed HIV from a death sentence into a chronic disease. Public health organisations recommend dramatic scale up of drugs for HIV treatment and prevention. However, a major threat is that drug options will be exhausted in the long-term due to drug resistance and toxicity. The major aim of this study is to advance the development of an entirely new drug class for HIV.