Journal of Environmental Health 2013 Abstracts - page 8

Community-Associated Methicillin-Resistant
Staphylococcus aureus
in College
Residential Halls
Katelynn Tonn,
Environmental Health Sciences Program, Ohio University
Timothy J. Ryan, PhD, CIH, CSP,
School of Public Health Sciences, Ohio University
Abstract
Methicillin-resistant
Staphylococcus aureus
(MRSA) was once a predominantly
hospital-acquired organism but community-associated MRSA (CA-MRSA) has become a
concern in athletics, prisons, and other nonclinical closed populations. As such, college
residential hall occupants and workers may be at elevated risk of spreading or contracting
MRSA.
Environmental samples were obtained to identify the occurrence of MRSA on
surfaces in bathrooms of 15 university residential halls. Sterile swabs and BBL
CHROMagar plates were used to sample seven categories of potentially contaminated
surfaces in each location. Frequencies and descriptive statistics were prepared. All sites
had at least one positive sample for MRSA, and shower floors displayed the greatest
prevalence (50%). These results indicate areas for heightened sanitation, and illustrate
CA-MRSA potential from such surfaces. The need for hygiene education of affected
persons about skin and soft tissue infections like MRSA, and intervention opportunities
for public health professionals, are discussed.
Prevalence of Methicillin-Resistant Staphylococci Species Isolated From Computer
Keyboards Located in Secondary and Postsecondary Schools
Tyler T. Boa,
University of Regina
Teddie O. Rahube,
University of Regina
Bastien Fremaux, PhD,
University of Regina
Paul N. Levett, PhD,
Saskatchewan Health
Christopher K. Yost, PhD,
University of Regina
Abstract
Methicillin-resistant
Staphylococcus aureus
(MRSA) is a public health threat
within the general community, thereby warranting identification of MRSA reservoirs
within the community. Computer terminals in schools were sampled for
S. aureus
and
methicillin-resistant staphylococci. The overall prevalence of MRSA on computer
keyboards was low: 0.68% for a postsecondary institution and 2% and 0% for two
secondary institutes. The MRSA isolate from the postsecondary institution did not
correspond to the Canadian epidemic clusters, but is related to the USA 700 cluster,
which contains strains implicated in outbreaks within the U.S.
The isolate from the secondary institute’s keyboard was typed as CMRSA7 (USA
400), a strain that has been implicated in both Canadian and U.S. epidemics. Methicillin-
resistant
S. haemolyticus
and
S. epidermidis
were also isolated from keyboards, indicating
that a mixed community of methicillin-resistant staphylococci can be present on
keyboards. Although the prevalence was low, the presence of MRSA combined with the
high volume of traffic on these student computer terminals demonstrates the potential for
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