Coagulase-Negative Staphylococci (CNS) are a group of bacteria commonly found on human skin and mucous membranes. Unlike their more pathogenic relatives, Staphylococcus aureus, they do not produce the enzyme coagulase, which helps in blood clotting. CNS are generally considered non-pathogenic but can occasionally cause infections, particularly in individuals with weakened immune systems or those with medical devices like catheters.
CNS are important in the medical field as they are often involved in hospital-acquired infections. They can form biofilms on medical devices, making them difficult to treat. Understanding CNS is crucial for infection control and prevention in healthcare settings.