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Development and Assessment of Intracellular Infection Models for Staphylococcus aureus
Published on: January 17, 2025
Staphylococcus aureus in the community: colonization versus infection
Maureen Miller1, Heather A Cook, E Yoko Furuya
1Department of Epidemiology and Biostatistics, School of Public Health, New York Medical College, Valhalla, New York, USA.
Plos One
|August 21, 2009
Summary
Staphylococcus aureus nasal colonization did not predict serious skin infections in households. Households are significant reservoirs for S. aureus transmission, highlighting the need to study alternative transmission sites.
Area of Science:
- Epidemiology
- Infectious Diseases
- Public Health
Background:
- Rising rates of antibiotic-resistant Staphylococcus aureus (S. aureus) infections in the community contrast with stable S. aureus nasal colonization rates.
- Understanding S. aureus transmission dynamics is crucial for effective infection control strategies.
Purpose of the Study:
- To evaluate Staphylococcus aureus nasal colonization as a proxy for disease transmission and infection in community settings.
- To identify potential community reservoirs for S. aureus.
Main Methods:
- A cross-sectional study surveyed 321 households in Northern Manhattan, collecting nasal swabs and social network data.
- Pulsed field gel electrophoresis (PFGE) was used to characterize S. aureus strains.
- Logistic regression models analyzed risk factors for household colonization and serious skin infections.
Main Results:
- Staphylococcus aureus prevalence was 25% in individuals and 40% in households; MRSA prevalence was 0.4%.
- Household colonization was significantly associated with recent antibiotic use.
- Independent risk factors for serious skin infection included international travel, sports, surgery, antibiotic use, and towel sharing; S. aureus colonization was not significantly associated with infection.
Conclusions:
- Nasal S. aureus colonization is not a reliable predictor of serious skin infections, suggesting other transmission routes or reservoirs.
- Households represent a substantial, yet underappreciated, reservoir for S. aureus colonization and potential transmission within the community.
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