====== Staphylococcus epidermidis ====== [[Staphylococcus]] epidermidis is a [[Gram-positive bacteria]], and one of over 40 species belonging to the genus Staphylococcus. It is part of the normal human flora, typically the skin flora, and less commonly the mucosal flora. Although S. epidermidis is not usually pathogenic, patients with compromised immune systems are at risk of developing infection. These infections are generally hospital-acquired. S. epidermidis is a particular concern for people with [[catheter]]s or other surgical implants because it is known to form biofilms that grow on these [[device]]s. Being part of the normal skin flora, S. epidermidis is a frequent contaminant of specimens sent to the diagnostic laboratory. [[Staphylococcus epidermidis ventriculitis]] see [[Staphylococcus epidermidis shunt infection]].