Staphylococcus epidermidis
Staphylococcus epidermidis: The Sly Survivor on Your Skin
Description
Staphylococcus epidermidis is a bacterium that is commonly found on the skin of humans and other mammals. It is a member of the Staphylococcus genus, which includes other notable bacteria such as Staphylococcus aureus (the cause of MRSA). S. epidermidis typically resides in the crevices of the skin, particularly in areas like the nose, armpits, and groin.
It is a Gram-positive bacterium, meaning it retains crystal violet dye during Gram staining. S. epidermidis is typically coagulase-negative, meaning it does not produce the enzyme coagulase, which is used to differentiate it from other Staphylococcus species like S. aureus.
Associated Diseases
While S. epidermidis is generally harmless and even beneficial to its host, it can become opportunistic and cause infections under certain conditions:
- Skin and wound infections: S. epidermidis can cause skin infections such as cellulitis and impetigo, and it can also contaminate wounds, leading to infections.
- Medical device infections: S. epidermidis is a common cause of infections associated with medical devices such as catheters, pacemakers, and prosthetic joints. These infections can be severe and difficult to treat.
- Bloodstream infections: In rare cases, S. epidermidis can enter the bloodstream and cause sepsis, a life-threatening condition.
Did you Know ?
S. epidermidis is estimated to be present on the skin of over 90% of the population, making it one of the most prevalent bacteria in the human microbiome.
