Overview of the characteristics for the pork farms visited in this study.

*<p>NA  =  Not available.</p

Combined results of environmental, pig, and veterinary student testing from MRSA-positive pork production sites.

a<p>Number of MRSA-positive samples/number of samples collected. ^bNumber of MRSA-positive students/number of students exposed. ^c<i>Spa</i> type t126 was isolated from a student 5 days following exposure to MRSA-positive site. ^dThree <i>spa</i> types (t002, t548, t1107) from same student.</p

Summary of the <i>spa</i> types and motifs from MRSA isolates found in this study overall and by source of isolation.

<p>Summary of the <i>spa</i> types and motifs from MRSA isolates found in this study overall and by source of isolation.</p

Most prevalent antimicrobial resistant profiles found in MRSA isolates and associated <i>spa</i> types.

<p>CHL  =  chlortetracycline, CLI  =  clindamycin, ENR  =  enrofloxacin, FLO  =  florfenicol, GEN  =  gentamicin, NEO  =  neomycin, OXY  =  oxytetracycline, SPE  =  spectinomycin, TIA  =  tiamulin, TIL  =  tilmicosin.</p

Antimicrobial resistance of MRSA isolates from pork farms and students.

<p>Number of isolates tested in parenthesis. Significantly different antimicrobial results across <i>spa</i> types indicated with asterisk (*).</p

Antimicrobial resistance of MRSA isolates from pork farms and students by ST398 status.

<p>t034 considered ST398-associated and t002/t548 considered non-ST398-associated. Number of isolates tested in parenthesis. Significantly different antimicrobial results by <i>spa</i> types indicated with asterisk (*).</p