Methicillin-resistant Staphylococcus lugdunensis carrying SCCmec type V misidentified as MRSA

• Main Authors: Eliezer Menezes Pereira, M.D., Ricardo Pinto Schuenck, M.D., Simone Aranha Nouér, M.D., Kátia Regina Netto dos Santos, M.D.
• Format: Article
• Language: English
• Published: Elsevier 2011-05-01
• Series: Brazilian Journal of Infectious Diseases
• Online Access: http://www.sciencedirect.com/science/article/pii/S1413867011701921

Staphylococcus lugdunensis is a rare cause of severe infections and clinical manifestations are similar to those related to S. aureus infection. We describe a hospital-acquired bacteremia due to methicillin-resistant Staphylococcus lugdunensis, misidentified as methicillin-resistant S. aureus. The oxacillin MIC was 16 μg/mL and the mecA gene and SCCmec type V were determined by PCR. Although treatment had been appropriated, the patient died after rapid progressive respiratory failure and another nosocomial sepsis. It is important not only to identify S. lugdunensis in view of its clinical course, but also to determine its susceptibility to oxacillin by detecting the mecA gene or its product. Keywords: Staphylococcus, methicillin resistance, bacteremia