Prospective Analysis Methicillin-resistant Staphylococcus aureus and its Risk Factors

Area of Science:

• Infectious Diseases
• Microbiology
• Epidemiology

Background:

• Methicillin-resistant Staphylococcus aureus (MRSA) has evolved into community-acquired (CA-MRSA) and healthcare-associated (HA-MRSA) forms.
• CA-MRSA and HA-MRSA can be distinguished by microbiological, epidemiological, and molecular characteristics.

Purpose of the Study:

• To investigate the prevalence and risk factors of MRSA infections in both community and hospital settings.
• To differentiate between CA-MRSA and HA-MRSA in a Kuwaiti teaching hospital population.

Main Methods:

• A prospective study was conducted from March to November 2011 involving patients in medical, surgical, pediatric, and ICU wards.
• MRSA screening cultures were obtained from multiple body sites (nasal, groin, axilla, wound, sputum, throat) upon admission.
• Antibiotic susceptibility testing was performed on all collected MRSA isolates.

Main Results:

• Out of 71 MRSA patients, 52 (73.2%) were carriers prior to admission, while 19 (26.8%) acquired MRSA during hospitalization.
• A significant correlation (P < 0.05) was observed between MRSA type and hospital ward, infection site, and duration of hospital stay.
• Lower serum albumin levels at admission were identified as a predictor of MRSA infection.

Conclusions:

• MRSA screening and control should be a national health priority to prevent outbreaks.
• Understanding the distinct characteristics and risk factors of CA-MRSA and HA-MRSA is crucial for effective management.
• Serum albumin levels may serve as a useful biomarker for MRSA infection risk assessment.