Original Article
Drug sensitivity test of human derived Brucella
Zhongzhi Zhao, Buyun Cui, Hai Jiang, Jiquan Li, Guiying Hu, Dongri Piao, Hongyan Zhao, Guozhong Tian, Liqing Xu
Published 2019-07-20
Cite as Chin J Endemiol, 2019, 38(7): 536-540. DOI: 10.3760/cma.j.issn.2095-4255.2019.07.005
Abstract
ObjectiveTo screen the most suitable medium for Brucella drug susceptibility test, and observe the resistance of human derived Brucella to different antibiotics.
MethodsTotally 180 strains of Brucella isolated from 25 provinces (municipalities, autonomous regions) in recent years were taken as observation objects. Mueller-Hinton (MH) agar, MH blood agar and Brinell agar were used to carried out the drug susceptibility test in vitro, and to compare the results of drug susceptibility test of different medium; the most suitable Brucella drug susceptibility test medium was used to detect the resistance of human derived Brucella to Doxycycline, Rifampicin, Streptomycin, Levofloxacin, Moxifloxacin, Ceftriaxone sodium, Co-trimoxazole and Amoxicillin/Clavulanic acid by K-B drug sensitive paper, and to observe the formation of antibacterial ring around the drug sensitive paper.
ResultsThe growth of Brucella on the MH agar and MH blood agar were slower than that on the Brinell agar, and the antibacterial rings were not obvious. All the 180 strains of Brucella were sensitive to seven antibiotics such as Doxycycline, Rifampicin, Streptomycin, Levofloxacin, Moxifloxacin, Ceftriaxone sodium, and Amoxicillin/Clavulanic acid; and 70 strains of Brucella were resistant to Co-trimoxazole, accounting for 39% (70/180); Brucella strains resistant to Co-trimoxazole were found in 21 provinces.
ConclusionsBrinell agar is the most suitable medium for Brucella susceptibility test. The human derived Brucella is resistant to Co-trimoxazole; the resistant strains are distributed in 21 provinces(municipalities, autonomous regions). It is recommended that relevant departments of the province (municipalities, autonomous regions) carry out epidemiological investigations on the resistance of Brucella, and strengthen the monitoring of drug resistance in clinical drugs of brucellosis patients.
Key words:
Brucellosis; Drug tolerance; Drug susceptibility test; Antibiotic
Contributor Information
Zhongzhi Zhao
Department for Brucellosis Control and Prevention, Qinghai Institute for Endemic Diseases Prevention and Control, Xining 811602, China
National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Beijing 102206, China
Buyun Cui
National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Beijing 102206, China
Hai Jiang
National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Beijing 102206, China
Jiquan Li
Department for Brucellosis Control and Prevention, Qinghai Institute for Endemic Diseases Prevention and Control, Xining 811602, China
Guiying Hu
Department for Brucellosis Control and Prevention, Qinghai Institute for Endemic Diseases Prevention and Control, Xining 811602, China
Dongri Piao
National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Beijing 102206, China
Hongyan Zhao
National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Beijing 102206, China
Guozhong Tian
National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Beijing 102206, China
Liqing Xu
Department for Brucellosis Control and Prevention, Qinghai Institute for Endemic Diseases Prevention and Control, Xining 811602, China
