Screening for methicillin-resistant Staphylococcus aureus … all doors closed?

Area of Science:

• Infectious Diseases
• Epidemiology
• Public Health

Background:

• Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant healthcare-associated infection risk.
• Current infection control strategies include active surveillance, contact precautions, and decolonization.

Purpose of the Study:

• To review current evidence on MRSA infection control strategies.
• To evaluate the impact of active surveillance, contact precautions, and targeted decolonization.
• To highlight emerging concerns regarding antimicrobial resistance.

Main Methods:

• Review of major clinical trials and studies on MRSA control.
• Analysis of data on the effectiveness of universal screening, contact precautions, and decolonization.
• Assessment of emerging resistance patterns to mupirocin and chlorhexidine.

Main Results:

• Recent trials challenge the efficacy of universal screening and contact precautions for MRSA control.
• Universal decolonization is proposed as an alternative, particularly in intensive care units (ICUs).
• Concerns exist regarding increasing resistance to decolonization agents like mupirocin and chlorhexidine.
• Combined strategies including hand hygiene, screening, contact precautions, and targeted decolonization show promise for specific populations.

Conclusions:

• Universal decolonization is a viable MRSA control strategy for ICUs, necessitating monitoring for resistance.
• Screening and contact precautions are effective for hospital-wide MRSA control.
• Targeted decolonization is beneficial for patients undergoing clean surgical procedures.
• Enhanced hand hygiene is a fundamental component of all MRSA infection control strategies.