Abstract and Introduction
Abstract
During August 1, 2014–July 31, 2015, in 2 counties in Minnesota, USA, incidence of invasive methicillin-susceptible Staphylococcus aureus (MSSA) (27.1 cases/100,000 persons) was twice that of invasive methicillin-resistant S. aureus (13.1 cases/100,000 persons). MSSA isolates were more genetically diverse and susceptible to more antimicrobial drugs than methicillin-resistant S. aureus isolates.
Introduction
Methicillin-resistant Staphylococcus aureus (MRSA) infections were first reported in the 1960s in healthcare facilities.[1] Risk factors included recent hospitalization, surgery, dialysis, having a central venous catheter or other invasive medical device, chronic wounds, residence in long-term care facilities or prisons, injection drug use, and exposure to antimicrobial drugs.[2] In the 1990s, MRSA infections caused by genetically distinct strains were observed among healthy persons in the community.[3]
Although S. aureus has long been recognized as a major human pathogen, epidemiologic studies and infection prevention precautions in recent decades have largely focused on MRSA. We compared epidemiologic, microbiologic, and molecular characteristics of invasive methicillin-susceptible S. aureus(MSSA) infections with those of invasive MRSA infections.
Emerging Infectious Diseases. 2019;25(1):171-174. © 2019 Centers for Disease Control and Prevention (CDC)
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