| unexpected sequence types in livestock associated methicillin-resistant staphylococcus aureus (mrsa): mrsa st9 and a single locus variant of st9 in pig farming in china. | in october 2008 nine farrow-to-finish pig farms were visited in shuangliu county in sichuan province, china. one farm was empty for one month but not cleaned after depopulation. dust samples were collected at each farm and analysed for the presence of methicillin-resistant staphylococcus aureus (mrsa). dust samples from four farms were also analysed for the presence of methicillin-susceptible s. aureus (mssa). on 5/9 farms mrsa was isolated and on 2/4 farms mssa was isolated. on two farms, inclu ... | 2009 | 19608357 |