Staphylococcus species, coagulase-negative
Definition: includes a group of species present as normal flora of human skin, respiratory, and mucous membrane surfaces. Although a normal commensal, strains are prominent causes of nosocomial infections, especially in patients with implanted intravenous access devices; some strains are abscess forming and cause diverse infections including sinusitis, wound infections, and osteomyelitis.
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Examples: glitazone, GI cocktail, etc.