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Volume 30, Number 6—June 2024
Research

Yersinia ruckeri Infection and Enteric Redmouth Disease among Endangered Chinese Sturgeons, China, 2022

Yibin Yang, Shijian XuComments to Author , Hao He, Xia Zhu, Yongtao Liu, Mou Hu, Bobin Jiang, Yuqiang Li, Xiaohui Ai, Guihong FuComments to Author , and Hongyu ZhangComments to Author 

Author affiliations: Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China (Y. Yang, H. He, X. Zhu, Y. Liu, X. Ai); Key Laboratory of Sturgeon Genetics and Breeding, Ministry of Agriculture and Rural Affairs, Hangzhou Qiandao Lake Sturgeon Technology Co., Ltd., Hangzhou, China (Y. Yang, S. Xu, M. Hu, B. Jiang, Y. Li); College of Animal Science and Technology, Hunan Agricultural University, Changsha, China (G. Fu); Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing, China (H. Zhang)

Main Article

Table

Antimicrobial susceptibility of Yersinia ruckeri strain zhx1 causing enteric redmouth disease in Chinese sturgeon, China, 2022*

Drug
 Approximate judgment standard of inhibition zone, diameter, mm
 Dose, μg
 Inhibition zone diameter, mm, mean ± SD (susceptibility)
R
 I
 S
β-lactams
Penicillin <17 18–20 >21 10 0 (R)
Amoxicillin
 <13
 14–17
 >18
 20
 0 (R)
Cephalosporins
Ceftizoxime <14 15–19 >20 30 0 (R)
Cefradine <14 15–17 >18 30 0 (R)
Cefotaxime
 <14
 15–22
 >23
 30
 0 (R)
Aminoglycosides
Gentamicin <12 13–14 >15 10 10.50 ± 0.50 (R)
Streptomycin <11 12–14 >15 10 0 (R)
Netilmicin <12 13–14 >15 30 9.00 ± 0.71(R)
Kanamycin <13 14–17 >18 30 11.00 ± 1.41 (R)
Tobramycin <12 13–14 >15 10 12.75 ± 0.83 (I)
Neomycin†
 <12
 13–16
 >17
 30
 13.50 ±1.12 (I)
Macrolides
Azithromycin <13 14–17 >18 15 9.75 ± 1.09 (R)
Erythromycin
 <13
 14–22
 >23
 15
 12.25 ± 0.83 (R)
Tetracyclines
Tetracycline <18 19–22 >23 30 18.00 ± 1.58 (I)
Doxycycline†
 <12
 13–15
 >16
 30
 14.25 ± 1.48 (I)
Quinolones
Enoxacin <14 15–17 >18 10 14.75 ± 1.64 (I)
Norfloxacin
 <12
 13–16
 >17
 10
 15.50 ± 1.12 (I)
Amphenicols
Chloramphenicol <12 13–17 >18 300 22.75 ± 0.83 (S)
Florfenicol†
 <12
 13–17
 >18
 75
 20.75 ± 1.30 (S)
Sulfonamides
Sulfisoxazole <12
 13–16 >17 300 11.25 ± 0.43 (R)

*I, intermediately sensitive; R, resistant; S, sensitive. †Veterinary antibiotics used in aquaculture.

Main Article

Page created: May 02, 2024
Page updated: May 22, 2024
Page reviewed: May 22, 2024
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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