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Research
Getting to grips with invasive group A streptococcal infection surveillance in Australia: are we experiencing an epidemic?Asha Rosemary Jeffrey Bowen Wyber Cannon BA MBBS DCH FRACP PhD GAICD FAHMS OAM MBChB MPH FRACGP PhD BSc(Hons) BBus PhD Head, Healthy Skin and ARF
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Searching for Strep A in the clinical environment during a human challenge trial: a sub-study protocolStreptococcus pyogenes (also known as group A Streptococcus , Strep A) is an obligate human pathogen with significant global morbidity and mortality. Transmission is believed to occur primarily between individuals via respiratory droplets, but knowledge about other potential sources of transmission via aerosols or the environment is limited. Such knowledge is required to design optimal interventions to control transmission, particularly in endemic settings.
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Comparison of group A streptococcal titres in healthy children and those with pharyngitis and skin infectionsRates of acute rheumatic fever, a sequelae of group A Streptococcal (GAS) infection, remain unacceptably high in Indigenous Māori and Pacific children in New Zealand. This prospective study aimed to describe GAS antibody titres in healthy children (5–14 years) by ethnicity, and to determine how paired titres vary with GAS culture positive and negative pharyngitis, and GAS skin infections.
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Prevention of bacterial complications of scabies using mass drug administration: A population-based, before-after trial in Fiji, 2018–2020Scabies is an important predisposing factor of impetigo which can lead to serious bacterial complications. Ivermectin-based mass drug administration can substantially reduce scabies and impetigo prevalence in endemic settings, but the impact on serious bacterial complications is not known.
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A controlled human infection model of Streptococcus pyogenes pharyngitis (CHIVAS-M75): an observational, dose-finding studyStreptococcus pyogenes is a leading cause of infection-related morbidity and mortality. A reinvigorated vaccine development effort calls for new clinically relevant human S pyogenes experimental infection models to support proof of concept evaluation of candidate vaccines. We describe the initial Controlled Human Infection for Vaccination Against S pyogenes (CHIVAS-M75) study, in which we aimed to identify a dose of emm75 S pyogenes that causes acute pharyngitis in at least 60% of volunteers when applied to the pharynx by swab.
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Global epidemiology of valvular heart diseaseValvular heart disease is a major contributor to loss of physical function, quality of life and longevity. The epidemiology of VHD varies substantially around the world, with a predominance of functional and degenerative disease in high-income countries, and a predominance of rheumatic heart disease in low-income and middle-income countries. Reflecting this distribution, rheumatic heart disease remains by far the most common manifestation of VHD worldwide and affects approximately 41 million people.
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Establishing a Western Australian Congenital and Acquired Heart Disease DatabaseThe main objective of the study is to establish a comprehensive register of congenital and acquired heart disease in WA with accurate re-classification of all cases through Princess Margart Hospital using international diagnostic codes.
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Evaluating the genetic contribution to rheumatic heart disease pathogenesis in Australian Aboriginal and Torres Strait Islander communitiesWe are conducting a genetic study to better understand why some people are susceptible to RHD and others are not.
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Head-to-head Pharmacokinetic Comparison of Bicillin ® L-A versus Lyophilised (Powdered) Benzathine Penicillin G administered by the Intramuscular and Subcutaneous RoutesFiji has one of the highest burdens of RHD is in the world and RHD is the second most common cause of death in young people in Fiji.
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Pacific Rheumatic Heart Disease (RHD) ProgramThe goal of the program is to establish the foundations of an effective, sustainable and equitable response to RHD in the Pacific.