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PICOBOO is a randomised, adaptive trial evaluating the immunogenicity and reactogenicity of licensed COVID-19 booster vaccines in immunocompetent individuals >12 years old. Here, we present data for seven different vaccines among three pre-specified participant strata defined by age and primary vaccine schedule.
Previous research has shown that immune development during the first week of life, i.e. ontogeny, is progressive, consistent and robust, involving large numbers of differentially expressed genes at each sampled time point.
Australia introduced a hybrid Respiratory Syncytial Virus (RSV) Maternal and Infant Protection Program (RSV-MIPP) in 2025, using National Immunisation Program-funded RSV vaccine for pregnant people from 28 weeks' gestation and jurisdiction-funded nirsevimab. We estimated real-world effectiveness and assessed the impact of the RSV-MIPP program across a participating surveillance network.
Human milk is a rich source of immunomodulatory factors that influence the development of the infant immune system, including susceptibility to allergic diseases. Among these components, milk antibodies have been extensively studied for their role in protecting against infections; however, their potential contribution to allergy prevention may be equally important. The mechanisms of protection include allergen exclusion, enhanced and targeted antigen presentation, immune modulation via shaping of the infant gut microbiome, and direct regulation of gut immune responses.
Antibiotic exposure in neonatal intensive care units (NICU) is high. This study describes antibiotic use in very preterm infants and examines the association between duration of exposure and outcomes in blood culture negative (CN) infants.
In the austral summer of 2021-2022, Australia experienced an unprecedented Japanese encephalitis virus (JEV) outbreak, with detections over 3000 km south of previous occurrences. Given the limited knowledge of JEV transmission ecology in Australia, we developed geospatial models of transmission risk to support the public health response. We created time-varying habitat suitability models for suspected mosquito vectors and ardeid hosts using month-scaled occurrence and covariate data from 2000-2023.
During winter months of temperate regions, concurrent epidemics of multiple respiratory pathogens can occur, causing periods of increased clinical burden. Case time series, which are predominantly used to monitor infection levels, can exhibit substantial noise and day-of-the-week effects, limiting the visual interpretation of trends in raw data.
Vaccine hesitancy and suboptimal vaccine uptake pose significant threats to public health, but modifiable psychological factors underpinning them are under-investigated. We examined the prevalence of spontaneous emotional mental imagery relating to infectious diseases and perinatal vaccines and its unique associations with vaccine hesitancy and uptake behaviour.
The first peanut oral immunotherapy (OIT) for children was approved by the US Food and Drug Administration (FDA) in 2020. While clinical efficacy is established, evidence on cost-effectiveness-whether the benefits outweigh the costs and adverse effects-remains limited. A variant of OIT, known as probiotic and peanut OIT (PPOIT), has shown similar efficacy in trials.
Protection of newborns from infection can be achieved through maternal or vaccine-induced antibodies, but the factors influencing vaccine protection (correlate of protection) and subsequent infant immunity remain insufficiently understood. Further investigation is essential to optimize early-life vaccination strategies.