Diversity of evolution in MDR monophasic S. Typhimurium among food animals and food products in Southern China from 2011 to 2018.
Int J Food Microbiol
; 412: 110572, 2024 Feb 16.
Article
em En
| MEDLINE
| ID: mdl-38237416
ABSTRACT
The monophasic variant of Salmonella enterica serovar Typhimurium with the antigenic formula 1,4,[5],12i- is one of the most common pathogenic bacteria causing global food-borne outbreaks. However, the research on molecular characteristics and evolution of monophasic S. typhimurium in China is still lacking. In the current study, 59 monophasic S. typhimurium strains were isolated from food animals and food products in South China between 2011 and 2018. A total of 87.5 % of monophasic S. typhimurium isolates were grouped into one independent clade with other monophasic S. typhimurium strains in China distinct from other countries by phylogenomic analysis. These isolates possess variable genotypes, including multiple ARGs on plasmid IncHI2, diverse evolutions at the fljAB locus, and virulence factors. Our results suggest that the monophasic S. typhimurium isolates currently circulating in China might be an independent epidemic subtype.
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MEDLINE
Assunto principal:
Infecções por Salmonella
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article