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The abundant skin commensal, Staphylococcus epidermidis, is the leading cause of late-onset sepsis (LOS) in preterm infants but rarely causes infections in term infants and adults. Staphylococcal virulence mechanisms and the role of the preterm immune responses in driving these life-threatening infections remain poorly understood.
The neonatal skin is central to early survival and immune development. Far from being a passive mechanical barrier, it integrates physical, chemical, and microbial defences that together protect the infant in the immediate postnatal period. In preterm infants, structural immaturity, reduced antimicrobial capacity, and altered microbial colonisation confer heightened vulnerability to infection and inflammation.
Impaired oxygen delivery or blood flow to the brain around the time of birth can cause injury. Hypoxic ischaemic encephalopathy is a leading cause of death and disability in term and near-term infants.
Skin care for very and extremely preterm infant is an important and previously underappreciated topic. Coconut oil skin care for preterm infants is a promising option, but several important questions remain including the theoretical potential for allergic sensitization.
Viral infections are associated with significant morbidity and mortality in neonates. The COVID-19 pandemic led to changes in viral epidemiology in Western Australia. The impact on patients in neonatal intensive care is uncertain.
Sepsis is one of the leading causes of neonatal mortality. There is heterogeneity in the outcomes measured and reported in studies of neonatal sepsis. To address this challenge, a core outcome set (COS) for research on neonatal sepsis was needed.
Late-onset sepsis (LOS) with Staphylococcus epidermidis is common in preterm infants, but the immunological mechanisms underlying heightened susceptibility are poorly understood. Our aim is to characterize the ontogeny of cytokine responses to live S. epidermidis in preterm infants with and without subsequent Gram-positive LOS.
Very preterm infants have a marked innate inflammatory response at the time of late-onset sepsis
Preterm babies have a heightened risk of infection as their immune system is not mature. The Neonatal Health Team is exploring new ways to diagnose, prevent and treat infections in WA's smallest patients .
Early-life antibiotic exposure is disproportionately high compared to the burden of culture-proven early-onset sepsis (CP-EOS). We assessed the contribution of culture-negative cases to the overall antibiotic exposure in the first postnatal week.