Prevalence of methicillin-resistant Staphylococcus aureus colonization among older residents of care homes in the United Kingdom

Benjamin Barr*, Mark H. Wilcox, Angela Brady, Peter Parnell, Bob Darby, David Tompkins

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    71 Citations (Scopus)

    Abstract

    OBJECTIVE. To determine the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) colonization among older residents of care homes in Leeds, United Kingdom, and to identify resident and care home risk factors for carriage. DESIGN. We conducted a cross-sectional prevalence survey of 715 residents from 39 care homes. All participants were tested for nasal colonization with S. aureus, including MRSA. A short questionnaire was completed about each participant and each care home. A multivariable model was used to determine which risk factors were independently associated with MRSA colonization. SETTING. Care homes for older residents in Leeds, United Kingdom. PARTICIPANTS. All residents in participating homes who were able to give informed consent. RESULTS. A total of 159 of 715 residents tested positive for MRSA, for a prevalence of 22% (95% confidence interval, 18%-27%) The resultant multivariate model showed that residence in a home with a low ratio of nurses to beds, residence in a care home in a deprived area, male sex, presence of an invasive device, and a hospitalization duration of more than 10 days during the previous 2 years were independently associated with MRSA colonization. CONCLUSIONS. This study found a large reservoir of MRSA within the care home population. Control strategies need to be coordinated between care homes and hospitals. Increasing the ratio of nurses to beds, reducing the duration of hospitalization, and improving the management of invasive devices could help reduce the prevalence of MRSA colonization. Further research is required to ascertain the potential health benefits of reducing the rate of MRSA colonization among care home residents.

    Original languageEnglish
    Pages (from-to)853-859
    Number of pages7
    JournalInfection Control and Hospital Epidemiology
    Volume28
    Issue number7
    DOIs
    Publication statusPublished - Jul 2007

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