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

Regional Transmission of Salmonella Paratyphi A, China, 1998-2012

Xin Lu, Zhenpeng Li, Meiying Yan, Bo Pang, Jialiang Xu, Biao Kan

Regional Transmission of Salmonella Paratyphi A, China, 1998-2012

Xin Lu et al. Emerg Infect Dis. 2017 May.

Abstract

To explore transmission patterns and genetic relationships of Salmonella enterica serovar Paratyphi A in China, we conducted a genome-wide single-nucleotide polymorphism analysis on the strains in the 4 provinces in which incidence was highest during 1998-2012. Markedly phylogeographic clustering suggested regional virus circulation after introduction from areas in southeastern China.

Keywords: China; SNP; Salmonella enterica serovar Paratyphi A; bacteria; population structure; single-nucleotide polymorphism; transmission mode.

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Figures

Figure 1
Figure 1
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.
Figure 2
Figure 2
Phylogenetic tree of Salmonella enterica serovar Paratyphi A strains in China and worldwide. The branches are colored according to the inferred location. Scale bar indicates number of years.
See this image and copyright information in PMC

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