|
|
|
| Investigation on the antibiotic-resistance E.coli in Wenyu river in Beijing. |
| SHI Jia-chen1,2, HU Jian-ying2*, CHANGHong2, WAN Yi2, ZHANG Zhao-bin2, XIANG Yan1 |
| 1.Department of Environmental Engineering, Beijing University ofAeronautics and Astronautics, Beijing 100083, China；2.College of Environmental Science, Peking University, Beijing100871, China |
|
|
|
|
Abstract The occurrence of antibiotic-resistance E.coli to four classes of antibiotics including ampicillin, tetracycline,sulfonamide (sulfamethoxazole-trimethoprim) and levofloxacin in Wenyu river in Beijing was investigated by using membranefilter method with E. coli chromogenic culture media. In Wenyu river basin, the total number of E. coli was 103~107cell/L and thenumber of antibiotic-resistance E. coli was 0~106 cell/L. The antibiotic-resistance rates to ampicillin, tetracycline, andsulfonamide were 10%~35%, 5%~25%, 10%~35% respectively; while the antibiotic-resistance rate of levofloxacin which wasrecently using in hospital was lowered than 15%. At the sampling point influenced by the fishery discharge, the number of antibiotic-resistance E. coli to tetracycline was higher markedly than those of resistance E. coli to other antibiotics, while the highest levofloxacin-resistance rates could be inferred having source of human discharge.
|
|
Received: 01 January 1900
|
|
|
|
|
|
|
