Staphylococci, coagulase negative
Gram positive cocci in clusters, coagulase-negative
Ubiquitous - skin organism
Most commonly a skin contaminant/colonizer.
The most common contaminant of blood cultures.
This may be a real pathogen particularly in nosocomial setting.
Disease manifestations include infections of prosthetic materials including:
Prosthetic valve endocarditis
Vascular catheter infections
Staphylococcus saphrophyticus causes UTI in young females
Staphylococcus lugdenensis acts more like S. aureus and is more virulent than other CoNS - should be respected as a pathogen