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Atopic diseases are the most common chronic conditions of childhood. The apparent rise in food anaphylaxis in young children over the past three decades is of particular concern, owing to the lack of proven prevention strategies other than the timely introduction of peanut and egg.

Dysbiosis refers to a reduction in microbial diversity, combined with a loss of beneficial taxa, and an increase in pathogenic microorganisms. Dysbiosis of the intestinal microbiota can have a substantial effect on the nervous and immune systems, contributing to the onset of several inflammatory diseases.

Intranasal vaccines offer a needle-free strategy to enhance immunity to respiratory infections. We investigated the mechanism of action of a novel intranasal vaccine using the human respiratory commensal Haemophilus haemolyticus, previously shown to protect against nontypeable Haemophilus influenzae otitis media and accelerate clearance of influenza A virus.

The COVID-19 pandemic evidenced the critical role of vaccination in reducing the severity of illness and the risk of infection. Despite the policies and efforts of governments to increase vaccination uptake, COVID-19 immunization among Australian Aboriginal pregnant women is lower compared to vaccine uptake of non-Indigenous pregnant women.

Nick Rishi S. Laurence Sung Gottardo Kotecha Cheung Chiu MBChB FRACP PhD MB ChB (Hons) MRCPCH FRACP PhD BPharm (Hons) MBA PhD MBBS FRACP FRCPA PhD

To assess the pharmacokinetics, safety, and tolerability of two high-dose, short-course primaquine (PQ) regimens compared with standard care in children with Plasmodium vivax infections.

To provide updated evidence-based clinical guidance in the management of infants with bronchiolitis presenting to emergency departments (EDs), general paediatric, or intensive care units (ICUs) in Australia and Aotearoa New Zealand (AoNZ) following the first publication in 2016.

Asthma exacerbations in children are associated with respiratory viral infection and atopy, resulting in systemic immune activation and infiltration of immune cells into the airways. The gene networks driving the immune activation and subsequent migration of immune cells into the airways remains incompletely understood. Cellular and molecular profiling of PBMC was employed on paired samples obtained from atopic asthmatic children during acute virus-associated exacerbations and later during convalescence.

A significant number of babies present transiently with low protein kinase C zeta (PKCζ) levels in cord blood T cells, associated with reduced ability to transition from a neonatal Th2 to a mature Th1 cytokine bias, leading to a higher risk of developing allergic sensitisation, compared to neonates whose T cells have 'normal' PKCζ levels. However, the importance of PKCζ signalling in regulating their differentiation from a Th2 to a Th1 cytokine phenotype propensity remains undefined.

Neutrophils are the most abundant immune cell in circulation. However, due to a number of technical challenges for researchers, including the neutrophil's short lifespan and difficulties with preservation, they are often discarded during blood processing and thus ignored in cohort studies. As such, the contribution of neutrophils to disease and their involvement in disease mechanisms is less explored compared with other immune cell types.