mssa infection definition
Background. Methicillin-resistant Staphylococcus aureus (MRSA) strains have become common causes of skin and soft tissue infections (SSTI) among previously healthy people, a role of methicillin-susceptible (MSSA) isolates before the mid-1990s.taphylococcus aureus is among the most common pathogens affecting human beings. It is a common cause of skin and soft tissue infections (SSTIs), bloodstream infections, osteomyelitis, septic arthritis, and device-related infections.