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. 2017 May;23(5):833–836. doi: 10.3201/eid2305.151539

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Phylogenetic tree of Salmonella enterica serovar Paratyphi A strains isolated from China, 1998–2012. The branches are colored according to inferred location. Inset: potential transmission of Salmonella Paratyphi A strains isolated from 4 provinces (Zhejiang Guangxi, Guizhou, and Yunnan). The flow bars indicate the source of transmission; 1 end of the bar directly touches the province of origin, and the other end of the bar exhibits a small gap before the province of destination.