High Prevalence of Community-Acquired Methicillin-Resistant Staphylococcus aureus Without Known Risk Factors in a Tertiary Referral Center

摘要

Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of nosocomial infection worldwide. Traditionally, MRSA has been considered a major nosocomial pathogen in health care facilities, but in the past decade, it has been observed emerging in the community as well. Patients with community-associated MRSA (CA-MRSA) infections usually lack risk factors known for patients with health care-acquired MRSA (HA-MRSA) infections, which include recent hospitalization, dialysis, nursing-home residence, and other comorbid conditions such as diabetes, chronic renal failure, and chronic pulmonary diseases which bring them into contact with health care settings. Community-associated MRSA infection without known risk factors has been increasing in prevalence during the last 2 decades.