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Research

Revisiting the inoculum effect for Streptococcus pyogenes with a hollow fibre infection model

Severe, invasive Streptococcus pyogenes (Strep A) infections result in greater than 500,000 deaths annually. First line treatment for such infections is benzylpenicillin, often with the addition of clindamycin, but treatment failure can occur with this regimen. This failure has been partially attributed to the inoculum effect, which presents as reduced antibiotic susceptibility during high bacterial density and plateau-phase growth.

Research

Djaalinj Waakinj (listening talking): Rationale, cultural governance, methods, population characteristics–an urban Aboriginal birth cohort study of otitis media

The majority of Australian Aboriginal and Torres Strait Islander (hereafter referred to as “Aboriginal”) people live in urban centres. Otitis media (OM) occurs at a younger age, prevalence is higher and hearing loss and other serious complications are more common in Aboriginal than non-Aboriginal children. Despite this, data on the burden of OM and hearing loss in urban Aboriginal children are limited.

Research

Estimation of the force of infection and infectious period of skin sores in remote Australian communities using interval-censored data

Prevalence of impetigo (skin sores) remains high in remote Australian Aboriginal communities, Fiji, and other areas of socio-economic disadvantage. Skin sore infections, driven primarily in these settings by Group A Streptococcus (GAS) contribute substantially to the disease burden in these areas. Despite this, estimates for the force of infection, infectious period and basic reproductive ratio-all necessary for the construction of dynamic transmission models-have not been obtained.

Research

The collaboration on social science and immunisation (COSSI): Global lessons from a successful Australian research and practice network

Samantha Carlson BSc MPH PhD Senior Research Officer Samantha.carlson@thekids.org.au Senior Research Officer @samicarlson ORCID Dr Carlson is an

Research

Net benefit of smaller human populations to environmental integrity and individual health and wellbeing

The global human population is still growing such that our collective enterprise is driving environmental catastrophe. Despite a decline in average population growth rate, we are still experiencing the highest annual increase of global human population size in the history of our species-averaging an additional 84 million people per year since 1990.

Research

Modeling the potential health impact of prospective Strep A vaccines

The World Health Organization published the preferred product characteristics for a Group A Streptococcus (Strep A) vaccine in 2018. Based on these parameters for the age of vaccination, vaccine efficacy, duration of protection from vaccine-derived immunity, and vaccination coverage, we developed a static cohort model to estimate the projected health impact of Strep A vaccination at the global, regional, and national levels and by country-income category.

Research

A hospital-based asynchronous ENT telehealth service for children with otitis media: Cost-minimisation and improved access

The purpose of this study is to explore the effectiveness of a hospital-based asynchronous ear, nose, and throat telehealth service (the Ear Portal) in reducing cost and improving access for children with otitis media.

Research

Health service utilisation for acute respiratory infections in infants graduating from the neonatal intensive care unit: a population-based cohort study

Despite advances in neonatal intensive care, babies admitted to Neonatal Intensive Care Units (NICU) suffer from adverse outcomes. We aim to describe the longer-term respiratory infectious morbidity of infants discharged from NICU using state-wide population-based linked data in Western Australia.

Research

Could late-latent syphilis be treated with a single subcutaneous infusion of long-acting penicillin?

Syphilis is an important global health threat and little has changed in its treatment since the mid-20th century. For late-latent or syphilis infection of unknown duration, the standard treatment of multiple intramuscular injections of benzathine penicillin G (BPG) are associated with significant pain and distress to clients and caregivers, negatively impacting on treatment completion.

Research

Superior immunogenicity of mRNA over adenoviral vectored COVID-19 vaccines reflects B cell dynamics independent of anti-vector immunity: Implications for future pandemic vaccines

Both vector and mRNA vaccines were an important part of the response to the COVID-19 pandemic and may be required in future outbreaks and pandemics. The aim of this study was to validate whether immunogenicity differs for adenoviral vectored (AdV) versus mRNA vaccines against SARS-CoV-2, and to investigate how anti-vector immunity and B cell dynamics modulate immunogenicity.