Background: Staphylococcus aureus is the leading bacterial cause of death globally [1]. Nasal carriage of S. aureus increases the risk of invasive infections, including by methicillin-resistant S. aureus (MRSA) strains, but studies including Portuguese university students (PUS) are scarce. Objective: To analyse the prevalence of methicillin-susceptible S. aureus (MSSA) and MRSA among PUS enrolled in different c...