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Infectious Diseases in Obstetrics and Gynecology
Volume 2007 (2007), Article ID 70876, 4 pages
Research Article

Staphylococcus aureus and MRSA Colonization Rates among Gravidas Admitted to Labor and Delivery: A Pilot Study

1Department of Obstetrics, Gynecology & Reproductive Sciences, Magee-Womens Hospital, University of Pittsburgh School of Medicine Pittsburgh, PA 15213, USA
2Department of Medicine, Division of Infectious Diseases, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH 44109, USA

Received 14 August 2007; Accepted 15 October 2007

Copyright © 2007 R. Beigi and J. Hanrahan. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. To determine colonization rates of Staphylococcus aureus given the potential for future intervention trials aimed at reducing surgical-site infectious morbidity, and to estimate methicillin-resistant Staphylococcus aureus (MRSA) rates in our patient population. Study design. Prospective pilot investigation comprising data from 104 gravidas admitted to an urban labor and delivery unit. All underwent anterior nares culture collection with a subset also undergoing vaginal culture collection. Results. Twenty-two percent of women were colonized in the anterior nares. Of the 28 women who had vaginal cultures collected, 4/28 (14.2%) demonstrated Staphylococcus aureus colonization. There was 82% concordance between the nares and vagina. Nine percent of isolates were MRSA strains. Overall, 2/96 (2.1%) of women were MRSA-colonized. Conclusions. Rates of Staphylococcus aureus colonization among gravidas entering labor and delivery are modest and consistent with the general population. MRSA rates among gravidas appear to be reassuringly low in this pilot study.