Molecular types and antibiotic resistance of Staphylococcus aureus isolates from bovine mastitis in a single herd in China |
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Authors: | Gao Jian Ferreri Miro Yu Fuqing Liu Xiuquan Chen Liben Su Jingliang Han Bo |
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Affiliation: | College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, Beijing 100193, China. |
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Abstract: | The molecular diversity, antibiotic resistance patterns and presence of resistance genes were determined in Staphylococcus aureus isolates from cases of bovine mastitis in a dairy cattle herd in China. Multiple locus variable number tandem repeat analysis was used for molecular typing. Resistance was determined through minimum inhibitory concentrations and resistance genes were detected by PCR. There was low molecular diversity; one predominant strain (type I) accounted for the majority of cases of S. aureus mastitis in the herd and this strain had a high frequency of resistance to penicillin and tetracycline. The most prevalent resistance genes were blaZ, ermC and tetM. |
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