Nasal commensals reduce Staphylococcus aureus proliferation by restricting siderophore availability.

The human microbiome is critically associated with human health and disease. One aspect of this is that antibiotic-resistant opportunistic bacterial pathogens, such as methicillin-resistant Staphylococcus aureus, can reside within the nasal microbiota, which increases the risk of infection. Epidemiological studies of the nasal microbiome have revealed positive and negative correlations between non-pathogenic species and S.