Study of the Nasal Intracellular Reservoir of Staphylococcus Aureus in Patients With S. Aureus Bacteremia

Nasal swab to detect nasal carriage of S. aureus

Peripheral venous sampling to collect peripheral blood mononuclear cells.

Antibiotic treatment for bacteremia (+/- 1 month), in all patients with S. aureus

A new nasal swab will be taken using the same technique, to see whether or not the carriage persists

In the event of positive carriage, a new intracellular reservoir test will be performed. A search for relapse (new S. aureus infection) or recurrence (S. aureus bacteremia if the 1st bacteremia was due to another pathogen) will be carried out.