Staphylococcus aureus is a commensal organism of healthy individuals associated with the skin and mucosal membranes. This potential pathogen is easily transmissible amongst individuals living in close proximity to each other. Methicillin-resistant S. aureus (MRSA) has become a serious health concern due to its resistance to antibiotics. There are eight types of MRSA, with type-V MRSA having its origins in India. Few cases of type V have been reported in the United States. Therefore, this study was initiated to determine if type V is present in south Texas and to find out if we can follow the transmission of this uncommon type amongst students and fomites at Texas A&M University-Kingsville. Through biochemical testing, we identified seventy-seven (38%) out of 200 domestic and international students who were positive for S. aureus. Thirty-four (45%) were domestic students and 43 (55%) were international students. Of those 77 students, 19 (25%) were positive for MRSA. Six (32%) of the 19 students were domestic and 13 (68%) were international. Using polymerase chain reaction and published primers, we were able to identify one type-I, one type-II, six type-IV, and 12 type-V. Four samples from the study could not be typed. Two (30%) of the six domestic students and eight (57%) of the 14 international students tested positive for type-V-MRSA.
July 27, 2016
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