期刊
EMERGING MICROBES & INFECTIONS
卷 9, 期 1, 页码 -出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/22221751.2019.1699450
关键词
Salmonella enterica serovar Typhimurium (Salmonella Typhimurium); Salmonella 4,[5],12:i:-; CRISPR typing; pig; human
资金
- National Natural Science Foundation of China [31730094]
- National Plan on Key Basic Research and Development [2017YFD0500100, 2017YFD0500700]
- Jiangsu Province Science and Technology Support Program independent innovation funds [CX(16)1028]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Yangzhou University International Academic Exchange Special Fund
CRISPR-based typing was performed to subtype isolates of S. Typhimurium and its monophasic variant Salmonella 4,[5],12: i:- from humans and animals between 2009 and 2017 in China. CRISPR typing classified all isolates into two lineages and four sub-lineages. All isolates from Lineage II and Lineage IB-1 were Salmonella Typhimurium. All of Salmonella 4,[5],12:i: isolates were distributed in Lineage IA and Lineage IB-2, which all belonged to ST34 by MLST typing. Only Lineage IB-2 contained ST34 isolates from both Salmonella Typhimurium and Salmonella 4,[5],12:i:-. Among the isolates of ST34, TST4 was identified as the most common CRISPR type representing 86.5% of Salmonella 4,[5],12:i:- and 14.5 % of Salmonella Typhimurium mainly from pigs and humans. This study demonstrated that TST4-ST34 isolates were predominant in Salmonella 4,[5],12:i:-, and pig was the main reservoir for Salmonella 4,[5],12:i:- in China, which might have the potential to transmit to humans by pig production.
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