Isolation of rare coagulase-negative isolates in immunocompromised patients: Staphylococcus gallinarum, Staphylococcus pettenkoferi and Staphylococcus pasteuri.

Herein, we describe the isolation of Staphylococcus pasteuri, Staphylococcus pettenkoferi and Staphy- lococcus gallinarum and summarize the clinical characteristics of five patients. Cases were identified over a 2-year surveillance period that identified the respective strains using microbiologic and molecular methods. These data suggest that rare coagulase-negative staphylococcal infections may be under-diagnosed due to difficulties associated with routine clinical laboratory diagnostic methods.