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Genetic analysis of antimicrobial resistance in Escherichia coli O157:H7 isolated from healthy cattle and buffaloes in Central Vietnam Update: 9/20/2012 4:22:04 PM (GMT+7)

Bui Thi Ba, Dao Hoai Thu, Vo Thanh Thin, Dang Van Tuan, Do Van Tan and Vu Khac Hung - We investigated and analyzed the antibiotic resistance genes of 34 E. coli O157:H7 strains isolated from healthy cattle and buffaloes in Central region of Vietnam. The results showed that most of the strains carried at least 1 antibiotic resistance gene. Among 34 strains, 23/34 (67.65%) strains possessed sulfonamide resistance genes. The amount of strains carried β-lactam resistance genes was 22/34 (64.7%) while this figure for aminoglycoside was 19/34 (55.88%); tetracycline and phenicol were the same (13/34) (38.24%) and quinolone was the lowest (11/34) (32.35%).

SUMMARY

 We investigated and analyzed the antibiotic resistance genes of 34 E. coli O157:H7 strains isolated from healthy cattle and buffaloes in Central region of Vietnam. The results showed that most of the strains carried at least 1 antibiotic resistance gene. Among 34 strains, 23/34 (67.65%) strains possessed sulfonamide resistance genes. The amount of strains carried β-lactam resistance genes was 22/34 (64.7%) while this figure for aminoglycoside was 19/34 (55.88%); tetracycline and phenicol were the same (13/34) (38.24%) and quinolone was the lowest (11/34) (32.35%). According to our knowledge, this is the first report investigated the prevalence of antimicrobial resistance genes in E. coli serotype O157:H7 isolated from healthy cattle and buffaloes in Vietnam.

Key words: E.coli O157:H7, Antibiotic resistance gên, Cattle, Central Vietnam

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