Staphylococcus chromogenes, a coagulase-negative staphylococcus species that can clot plasma

Abstract

Staphylococcus chromogenes is one of the main coagulase-negative staphylococci isolated from mastitis of dairy cows. We describe S. Chromogenes isolates that can clot plasma. Since the main pathogen causing mastitis is coagulase-positive Staphylococcus aureus, the coagulase-positive phenotype of S. Chromogenes described here can easily lead to misidentification.