Methicillin-resistant Staphylococcus aureus (MRSA): a community-based prevalence survey

Area of Science:

• Microbiology
• Epidemiology
• Public Health

Background:

• Nasal carriage of Staphylococcus aureus is common.
• Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant public health threat.
• Understanding community MRSA prevalence is crucial for infection control.

Purpose of the Study:

• To determine the prevalence of nasal MRSA carriage in the adult community population of Birmingham, UK.
• To identify potential risk factors associated with MRSA colonization.

Main Methods:

• A cross-sectional prevalence survey was conducted on a random sample of adults (aged over 16) in Birmingham.
• Nasal swabs were collected from participants at their general practice or home.
• Data on risk factors were gathered using a self-completed questionnaire.

Main Results:

• The overall prevalence of nasal MRSA colonization was 1.5% (4/274).
• 23% (63/274) of subjects carried Staphylococcus aureus in their nose.
• Of the S. aureus isolates, 6% (4/63) were identified as MRSA; 2 of these carriers had prior healthcare contact.

Conclusions:

• The prevalence of nasal MRSA colonization in the general adult population of Birmingham in 1998 was low.
• While overall prevalence was low, healthcare contact was noted in a proportion of MRSA carriers.
• Further surveillance may be warranted to monitor trends in community MRSA carriage.