Methicillin-resistant Staphylococcus aureus on hospital admission in Turkey

Area of Science:

• Infectious Diseases
• Microbiology
• Clinical Medicine

Background:

• Hospital-acquired infections pose a significant threat to patient safety.
• Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of nosocomial infections.
• Early detection of MRSA colonization is crucial for infection control.

Purpose of the Study:

• To determine the prevalence of MRSA among patients on hospital admission.
• To characterize the genetic makeup of detected MRSA strains, specifically looking for mecA and PVL genes.
• To identify potential risk factors for MRSA colonization in this patient population.

Main Methods:

• Screening of 900 patients upon hospital admission for MRSA.
• Molecular detection of MRSA strains.
• Analysis of mecA and Panton-Valentine leukocidin (PVL) genes in detected strains.
• Review of patient history for recent hospitalizations.

Main Results:

• A total of 11 MRSA strains were detected, representing a prevalence of 1.2%.
• All identified MRSA strains tested positive for both the mecA and PVL genes.
• A significant proportion (72%) of MRSA-positive patients reported a history of hospitalization within the preceding 12 months.

Conclusions:

• The study identified a low but present prevalence of MRSA colonization at hospital admission.
• The presence of mecA and PVL genes in all detected strains suggests a potential for virulence and transmission.
• Recent hospitalization emerged as a key risk factor, highlighting the importance of screening high-risk patient groups.