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Soluble Inhibitors Of Influenza Virus In The Airway Fluids Of Mice, Ferrets And Humans.
Funder
National Health and Medical Research Council
Funding Amount
$404,803.00
Summary
This study will characterize the ability of soluble proteins in airway secretions to recognize and destroy influenza viruses. As many of our insights regarding influenza pathogenesis are derived from studies in animal models, we will characterize the importance of proteins in airway fluids from mice and ferrets, as well as from humans. These findings will be of particular importance when assessing the relevance of particular animal models to understanding human disease.
Priming, Recruitment And Retention Of Influenza Virus Specific CD8 T Cells In The Upper Airways
Funder
National Health and Medical Research Council
Funding Amount
$633,371.00
Summary
Influenza virus gains entry into the body by inhalation and initiates its replication cycle within the upper airways. This early stage of infection, when the amount of influenza virus is low, provides the ideal window of opportunity for an effective immune response to limit disease progression. In this proposal we will define the immunity that can be evoked within the upper airways and determine immune mechanisms left behind that can safeguard this region from this important respiratory pathogen
Inhibition Of IFN-?/? By Human Metapneumovirus And The Induction Of Inflammation
Funder
National Health and Medical Research Council
Funding Amount
$605,251.00
Summary
The newly isolated human metapneumovirus (hMPV) causes significant respiratory illness in infants, young children and the elderly. The virus can persist long-term and may predispose individuals to chronic lung disease. This proposal aims to determine the mechanisms by which hMPV infection causes respiratory disease, with a view to improving treatments and preventing disease.
Influenza A Virus PB1-F2 Protein: A Putative Virulence Factor And Initiator Of Inflammation
Funder
National Health and Medical Research Council
Funding Amount
$474,718.00
Summary
Influenza virus produces a protein of undefined function called PB1-F2. Infection of mice with virus expressing PB1-F2 from virulent strains causes severe lung inflammation, while PB1-F2 from milder seasonal viruses does not. We will examine how PB1-F2 influences virulence of human influenza in the ferret, which exhibits the same illness as humans. This work will help understand the disease severity of newly evolved influenza viruses of humans and the role of PB1-F2 in mediating this.
Exploring The Role Of Respiratory Virus Infections In Childhood Asthma Exacerbations
Funder
National Health and Medical Research Council
Funding Amount
$596,649.00
Summary
The PEAK study will explore the reasons children get worse asthma symptoms when they get colds. These reasons examined include the asthma medications taken (or not taken), allergies and exposure to allergens and the type of virus involved. The study follows the children over the whole school term and uses a new way to sample virus by collecting it in the breath, this is more comfortable than old methods and can be done at home.
This proposal utilises forefront technologies to identify and characterise fundamental biological processes influenced by toxic free radicals that are triggered by viruses such as the flu and HIV. The approach is a synergistic collaboration between researchers with unique and complementary expertise across disciplines and across Australian and Irish universities to ultimately identify future drugs to treat viral disease.
Extending The MIS BAIR Randomised Trial Of BCG To Prevent Childhood Allergy And Infection
Funder
National Health and Medical Research Council
Funding Amount
$939,504.00
Summary
BCG (used till recently to prevent tuberculosis) is a potential low cost and readily available vaccine which could reduce the rates of allergy and infection in Australian children. We propose to extend our existing NHMRC-funded trial, which studies whether BCG vaccinatinon given at birth prevents the development food allergy, eczema and infection in the 1st year of life, to see if this effect continues until 5yrs of age. At this age, we can also see if BCG vaccination at birth prevents asthma.
Role Of Macrophages In Uropathogenic E. Coli Infections
Funder
National Health and Medical Research Council
Funding Amount
$574,890.00
Summary
Urinary tract infections (UTI) are one of the most common types of infections in humans. They are also a major cause of septic shock, a condition with high fatality rates. Uropathogenic Escherichia coli (UPEC) are the major microbes causing UTI in humans. This project addresses the role of an immune cell type, the macrophage, in UPEC-mediated disease. The outcomes of this project will be a better understanding of how UPEC causes disease, and potentially new treatment regimes for UTI.
Identification Of Host Restriction Factors That Block Respiratory Virus Infection
Funder
National Health and Medical Research Council
Funding Amount
$956,898.00
Summary
Following inhalation, respiratory viruses can infect and grow in airway epithelial cells. Although immune cells such as macrophages are also susceptible to infection, this is generally abortive and new viruses are not released. This project will identify proteins induced in macrophages that block respiratory viruses and prevent their spread in the airways. We will also define mechanisms by which some virulent strains overcome this block to grow in macrophages.
Chronic Active Viral Persistence Versus Host Immune Mediated Pathology: An Analysis And Manipulation Of The Balance.
Funder
National Health and Medical Research Council
Funding Amount
$418,658.00
Summary
Our robust ability to mount an immune response and clear infections is tempered by the possibility of promoting autoimmunity. Several host genes regulate immunity. Viruses like HIV have exploited these to abrogate antiviral immunity. This project attempts to define host factors that promote chronic infection. This will be extremely valuable in understanding the vulnerabilities of our immune system and provide an insight into how we can treat chronic infections.