| methicillin-resistant staphylococcus aureus (mrsa) strain st398 is present in midwestern u.s. swine and swine workers. | recent research has demonstrated that many swine and swine farmers in the netherlands and canada are colonized with mrsa. however, no studies to date have investigated carriage of mrsa among swine and swine farmers in the united states (u.s.). | 2009 | 19145257 |