Molecular Characterization of Bacillus anthracis Directly from Patients' Eschar and Beef in an Anthrax Outbreak in Jiangsu Province, China, 2012

Zhongming Tan Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China

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Xian Qi Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China

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Ling Gu Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China

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Changjun Bao Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China

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Fenyang Tang Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China

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Yefei Zhu Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China

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An outbreak of anthrax was reported in Lianyungang, Jiangsu Province, China in 2012. Laboratory confirmation of cases was made by detection of Bacillus anthracis genes rpoB, pagA, and cap using real-time polymerase chain reaction (PCR); source tracking was conducted by multiple locus variable-number tandem-repeat analysis (MLVA) and pagA sequencing using DNA extracted from case specimens and meat from a suspected slaughtered cow. The genotypes were MLVA type 57 and pagA genotype I. Combined with the field epidemiological data, the four cutaneous anthrax cases most likely were caused by butchering of the sick cow. Backward tracing of animal cases identified the region of origin, and some public health measures, such as reactive or preventative animal vaccination for cattle, intersectoral cooperation, ensuring proper pre-slaughter inspection, and educating butchers and villagers about this disease, could be used to prevent B. anthracis infection.

Author Notes

* Address correspondence to Yefei Zhu, Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiangsu Road, Nanjing 210009, China. E-mail: jszyf@jscdc.cn

Financial support: This study was supported by Jiangsu Province Health Development Project with Science and Education Grants ZX201109 and RC2011085 and Jiangsu Province Preventive Medicine Research Project No. Y2012093.

Authors' addresses: Zhongming Tan, Xian Qi, Ling Gu, Changjun Bao, Fenyang Tang, and Yefei Zhu, Key Laboratory of Enteric Pathogenic Microbiology, Ministry of Health, Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, Jiangsu Province, China, E-mails: jstzm@jscdc.cn, qixiansyc@hotmail.com, jcgl126@126.com, bao_2000cn@163.com, tfyepi@jscdc.cn and jszyf@jscdc.cn.

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