Infectious Diseases Life Sciences & Biomedicine Public, Environmental & Occupational Health Science & Technology
OBJECTIVE. To determine whether the molecular epidemiological characteristics of methicillin-resistant Staphylococcus aureus (MRSA) had changed in a level III neonatal intensive care unit (NICU).
DESIGN. Retrospective review of medical records.
SETTING. Level III NICU of a university-affiliated children's hospital in New York, New York.
PATIENTS. Case patients were neonates hospitalized in the NICU who were colonized or infected with MRSA.
METHODS. Rates of colonization and infection with MRSA during the period from 2000 through 2008 were assessed. Staphylococcal chromosomal cassette (SCC) mecA analysis and genotyping for S. aureus encoding protein A (spa) were performed on representative MRSA isolates from each clonal pulsed-field gel electrophoresis pattern.
RESULTS. Endemic MRSA infection and colonization occurred throughout the study period, which was punctuated by 4 epidemiologic investigations during outbreak periods. During the study period, 93 neonates were infected and 167 were colonized with MRSA. Surveillance cultures were performed for 1,336 neonates during outbreak investigations, and 115 (8.6%) neonates had MRSA-positive culture results. During 2001-2004, healthcare-associated MRSA clones, carrying SCC mec type II, predominated. From 2005 on, most MRSA clones were community-associated MRSA with SCC mec type IV, and in 2007, USA300 emerged as the principal clone.
CONCLUSIONS. Molecular analysis demonstrated a shift from healthcare-associated MRSA (2001-2004) to community-associated MRSA (2005-2008). Infect Control Hosp Epidemiol 2010; 31(6): 613-619
Changes in the Molecular Epidemiological Characteristics of Methicillin-Resistant Staphylococcus aureus in a Neonatal Intensive Care Unit
Creators
Alison J. Carey - Drexel University
Phyllis Della-Latta - Presbyterian Hospital
Richard Huard - Presbyterian Hospital
Fann Wu - Presbyterian Hospital
Phillip L. Graham - Presbyterian Hospital
Diane Carp - NewYork–Presbyterian Hospital
Lisa Saiman - Presbyterian Hospital
Publication Details
Infection control and hospital epidemiology, v 31(6), pp 613-619
Publisher
Cambridge Univ Press
Number of pages
7
Grant note
T32AI007531 / NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Allergy & Infectious Diseases (NIAID)
T32 AI007531 / NIAID NIH HHS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Allergy & Infectious Diseases (NIAID)
Resource Type
Journal article
Language
English
Academic Unit
Pediatrics
Web of Science ID
WOS:000277208400009
Scopus ID
2-s2.0-77952130369
Other Identifier
991019168290104721
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