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Published on: May 8, 2013

Methicillin-resistant Staphylococcus aureus in long-term-care facilities

A Manzur1, F Gudiol

  • 1IDIBELL, Infectious Diseases Service, Hospital de Bellvitge, University of Barcelona, Barcelona, Spain.

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
|December 3, 2009
PubMed

Insights

Long-term-care facilities (LTCFs) are reservoirs for methicillin-resistant Staphylococcus aureus (MRSA). While colonization is common and persistent, MRSA infections are infrequent in LTCFs, but pose risks in acute care settings.

Area of Science:

  • Infectious Diseases
  • Epidemiology
  • Healthcare-Associated Infections

Background:

  • Long-term-care facilities (LTCFs) harbor a high prevalence of methicillin-resistant Staphylococcus aureus (MRSA), acting as significant reservoirs.
  • Limited data exist on the natural history and long-term dynamics of MRSA colonization within LTCF populations.

Purpose of the Study:

  • To describe the epidemiology of MRSA colonization in LTCFs.
  • To identify risk factors associated with MRSA colonization.
  • To evaluate the clinical and epidemiological impact of MRSA colonization in LTCFs.

Main Methods:

  • Review of existing literature and clinical data on MRSA prevalence and colonization in LTCFs.
  • Analysis of host-related factors contributing to colonization risk.
  • Assessment of infection outcomes and transmission potential in different healthcare settings.

Main Results:

  • The cumulative incidence of MRSA colonization in LTCFs is approximately 20% annually, with over half of carriers experiencing persistent colonization.
  • Risk factors for colonization include antibiotic use, presence of invasive devices, and suboptimal infection control practices.
  • MRSA-infected residents in LTCFs rarely develop severe infections, but colonized individuals pose a transmission risk in acute-care settings.

Conclusions:

  • The epidemiological impact of MRSA in LTCFs, particularly concerning transmission in acute care, outweighs the individual clinical impact within the LTCF.
  • Routine application of standard precautions is recommended for all LTCF residents.
  • Targeted interventions like barrier precautions and decolonization should be reserved for managing MRSA outbreaks.

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