A comparison of risk factors associated with community-associated methicillin-resistant and -susceptibleStaphylococcus aureusinfections in remote communities

Abstract

SUMMARYIn this case-control study, cases [community-associated methicillin-resistantStaphylococcus aureus(CA-MRSA),n=79] and controls [community-associated methicillin-susceptibleS. aureus(CA-MSSA),n=36] were defined as a laboratory-confirmed infection in a patient with no previous hospital-associated factors. Skin and soft tissue were the predominant sites of infection, both for cases (67·1%) and controls (55·6%). Most of the cases (79·7%) and controls (77·8%) were aged <30 years. Investigations did not reveal any significant statistical differences in acquiring a CA-MRSA or CA-MSSA infection. The most common shared risk factors included overcrowding, previous antibiotic usage, existing skin conditions, household exposure to someone with a skin condition, scratches/insect bites, and exposure to healthcare workers. Similar risk factors, identified for both CA-MRSA and CA-MSSA infections, suggest standard hygienic measures and proper treatment guidelines would be beneficial in controlling both CA-MRSA and CA-MSSA in remote communities.