Yokenella Regensburgei Infection in an Immunocompetent Patient.

BACKGROUND

Yokenella regensburgei is a gram-negative, opportunistic pathogen that is ubiquitous in natural environments. It commonly affects immunocompromised patients.

METHODS

The patient was a 71-year-old female with skin and soft tissue wound caused by trauma. The surgical debridement and abscess drainage were performed by surgeons. The specie of infected organism was identified by the D2Mini semi-automated system and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF).

RESULTS

The result of bacterium culture showed gram-negative bacillus was moist, grey-white, semitransparent, and regular shape. Then the D2Mini semi-automated system and MALDI-TOF revealed that the colonies are Y. regensburgei. According to the result for drug sensitivity, antibiotic therapy was switched to cefoperazone/sulbac-tam and levofloxacin.

CONCLUSIONS

Cooperation between clinical microbiology laboratories and surgeons is essential for the infected patient without typical symptoms. Agricultural activities and stab wounds may be related to Y. regensburgei infection.