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Methicillin-Resistant Staphylococcus Aureus Nasal Colonization Prevalence among Emergency Medical Services Personnel

Published online by Cambridge University Press:  24 April 2013

Alaa Al Amiry ,
Richard A. Bissell ,
Brian J. Maguire  and
Donald W. Alves
Alaa Al Amiry*
Affiliation:
Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan. Current affiliation: Ajman University of Science and Technology, Ajman, UAE
Richard A. Bissell
Affiliation:
University of Maryland, Baltimore County Department of Emergency Health Services, Baltimore, Maryland USA
Brian J. Maguire
Affiliation:
University of Maryland, Baltimore County Department of Emergency Health Services, Baltimore, Maryland USA. Current affiliation: School of Medical and Applied Sciences, Central Queensland University, Rockhampton, Qld Australia
Donald W. Alves
Affiliation:
Department of Emergency Medicine, Johns Hopkins Bayview Medical Center, Baltimore, Maryland USA
*
Correspondence: Alaa Al Amiry, MS, BSN, NRCCEMT-P, PNCCT Ajman University of Science and Technology P.O. Box 346 Ajman UAE E-mail alamiry_alaa@hotmail.com or a.alamiry@ajman.ac.ae
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Abstract

Introduction

The prevalence of Methicillin-resistant Staphylococcus aureus (MRSA) nasal colonization among Emergency Medical Services (EMS) personnel is not well studied. Methicillin-resistant Staphylococcus aureus colonization can be a health hazard for both EMS personnel and patients. The aim of this study was to quantify the prevalence of MRSA colonization among EMS personnel. This study will help the scientific community understand the extent of this condition so that further protocols and policies can be developed to support the health and wellbeing of EMS personnel.

Hypothesis/ Problem

The hypothesis of this study was that the prevalence of MRSA colonization among EMS personnel is significantly higher than among the general population.

Methods

This was a cross-sectional study. A total of 110 subjects were selected from two major US Mid-Atlantic fire departments. Methicillin-resistant Staphylococcus aureus colonization was detected by nasal swabbing. Nasal swabs were inoculated onto a special agar medium (C-MRSAgar) with polymerase chain reaction testing performed. One-sided binomial distribution at the StudySize 2.0 Web calculator was used. Using the Web calculator, p (H0 proportion) = 1.5%; a difference (H1-H0) ‘Δ’ = 4.53% can be detected at α = 5% and power = 80% with N = 110.

Results

Samples were collected from 110 volunteers. Seven samples were positive for MRSA, resulting in a prevalence of 7/110 or 6.4% (95% CI, 1.8%-11%; P < .0003) compared with a 1.5% prevalence of MRSA colonization among the general population.

Conclusion

There is evidence that EMS personnel have a higher prevalence of MRSA colonization than the general population. This can be a risk to patients and can be recognized as an occupational hazard.

Al AmiryA, BissellRA, MaguireBJ, AlvesDW. Methicillin-Resistant Staphylococcus Aureus Nasal Colonization Prevalence among Emergency Medical Services Personnel. Prehosp Disaster Med. 2013;28(4):1-5.

Keywords

bioterrorismcontaminationEmergency Medical Serviceshand washinginfection controlMethicillin-resistant Staphylococcus aureus (MRSA)nasal colonizationprehospitalsurveillance
Type
Original Research
Information
Prehospital and Disaster Medicine , Volume 28 , Issue 4 , August 2013 , pp. 348 - 352
Copyright
Copyright © World Association for Disaster and Emergency Medicine 2013 

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