Abstract
Objective To analysis the etiology and molecular classification of brucella strains isolated in Guangdong province in 2010.Methods The strains of 19 brucella were verified and identified by some methods including traditional biology phenotype confirmation,PCR amplification and pulsed field gel electrophoresis (PFGE).Results On phenotype level,4 strains were brucella melitensis biovar 1,2 strains were brucella suis biovar 3,and the rest were brucella melitensis biovar 3,which were specific B genes positive strains,and the PFGE typing similar values ranging from 67.9％ to 100％.In addition to the four strains from Zhuhai for the outbreak,the homology was 100％,and the rest were sporadic cases.Conclusions Brucella cases,in Guangdong province,are highly sporadic and dispersed outbreaks.Compared with a few years ago,it shows species diversification,and brucella melitensis biovar 3 is still the dominant serotype.PFGE can be used to distinguish the three species of brucella,but it can't effectively distinguish the allotypes. Key words: Brucella; Bacterial typing techniques; Polymerase chain reaction; Electrophoresis,gel, pulsed-field
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