Cross-transmission of Acinetobacter junii carrying blaOXA-58 in a neonatal ICU.

Background: Nasal colonization of two preterm infants in our neonatal ICU by Acinetobacter junii carrying the blaOXA-58 carbapenem resistance gene was demonstrated.

Objectives: To study whether the two isolates were identical and to investigate the hypotheses of cross-transmission.

Methods: Antibiotic susceptibility tests of the two isolates were performed by standard diffusion and the MICs of carbapenems determined by the MIC-gradient strip method.