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KMID : 0380420190430040189
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Journal of Prventive Veterinary Medicine
2019 Volume.43 No. 4 p.189 ~ p.193
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Molecular epidemiological study on a human patient of Brucella melitensis infection occurred in Korea
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Yum Eun-Ji
Lee Jin-Ju
Kim Min-Kyeong
Park Eun-Ji
Sung So-Ra
Lee Min-Hoe
Yoon Soon-Seek
Her Moon
Choi Jeong-Soo
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Abstract
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Brucellosis is the most common zoonosis worldwide, which is caused by Brucella spp. In humans, it can be mainly occurred by direct contact with infected animals or consumption of contaminated dairy products. This study focused on human brucellosis caused by B. melitensis discovered from Chinese worker in Korea in 2015. We investigated molecular epidemiological evidence to find the infection source. We first performed several PCR methods including 16S rRNA PCR, multiplex PCR and real-time PCR to identify Brucella species. We also conducted MLVA typing for epidemiological trace-back analysis. The isolate from the patient was confirmed to B. melitensis through Brucella-specific PCR. In clustering analysis with B. melitensis from foreign countries, this human isolate was correlated with B. melitensis isolates from humans and sheep in China by 99.9% similarity. Thus, we assumed the brucellosis patient has been already infected in China followed by migration to Korea according to molecular epidemiological analysis with history evidence. Moreover, we suggest it needs to take measures to reduce the risk for intercountry transmission of brucellosis due to the influx of infected people from abroad.
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KEYWORD
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Trace back, B. melitensis, brucellosis, MLVA typing
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