Vaccine Trials Group

Maternal RSVpreF Vaccine Effectiveness Against Respiratory Syncytial Virus in Hospitalized Infants

In February 2025, Australia introduced maternal vaccination with bivalent respiratory syncytial virus prefusion F protein-based vaccine (RSVpreF) in the National Immunization Program for pregnant individuals from 28 weeks' gestation as the primary, year-round strategy to prevent RSV disease in infants 6 months of age or younger.

SARS-CoV-2 Ancestral and Omicron variant immunity in Australian children in 2023, a seroprevalence study

The emergence of the SARS-CoV-2 Omicron variant in late 2021 led to widespread infection in Australian children, many unvaccinated. The breadth and magnitude of antibody responses to SARS-CoV-2 variant infections and vaccination in children remain incompletely understood. We aimed to estimate seroprevalence against SARS-CoV-2 spike (S) and nucleocapsid (N) antigens and explore antibody kinetics, focusing on Omicron subvariants.

Mucosal immune cell priming by intranasally delivered Haemophilus haemolyticus is associated with heterologous protection against influenza and nontypeable Haemophilus influenzae

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.

Long-term outcomes of childhood encephalitis in Australia: burden and predictors from the Australian childhood encephalitis (ACE) prospective multicentre cohort

Encephalitis is inflammation of the brain parenchyma with heterogenous aetiology and presentation. In children, it often leads to short-term residual neurological deficits, however clinical predictors of adverse long-term outcome are not fully understood.