Changes in the Antimicrobial Susceptibility of Actinobacillus pleuropneumoniae Serotype 2 Isolated Between 2000 and 2006 in Miyazaki, Japan

Abstract

Changes in the antimicrobial susceptibility of Actinobacillus pleuropneumoniae serotype 2, isolated from pigsin Miyazaki between 2000 to 2006, were investigated. Fifty-six antimicrobial resistant bacteria were confirmedin the 80 isolates. The range of resistant rates to kanamycin, oxytetracycline and chloramphenicol was at31.3%-87.5% for seven years. Sulfamethoxazole/trimethoprim-resistant strains were isolated each year starting2002, and the range of resistant rates was 6.3%-21.4%. Ampicillin and norfloxacin maintained high activity withrespect to the isolates.