Multilocus sequence type profiles of Bacillus cereus isolates from infant formula in China
-
Yong Yang [2] ; Xiaofeng Yu [1] ; Li Zhan [2] ; Jiancai Chen [2] ; Yunyi Zhang [2] ; Junyan Zhang [2] ; Honghu Chen [2] ; Zheng Zhang [2] ; Yanjun Zhang [2] ; Yiyu Lu [2] ; Lingling Mei [2]
-
[1] Shihezi University
Shihezi University
China
-
[2] Department of Microbiology, Zhejiang Provincial Center for Disease Control and Prevention, China
-
- Localización: Food microbiology, ISSN 0740-0020, Vol. 62 (April), 2017, págs. 46-50
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
-
Resumen
Bacillus cereus sensu stricto is an opportunistic foodborne pathogen. The multilocus sequence type (MLST) of 74 B. cereus isolated from 513 non-random infant formula in China was analyzed. Of 64 sequence types (STs) detected, 50 STs and 6 alleles were newly found in PubMLST database. All isolates except for one singleton (ST-1049), were classified into 7 clonal complexes (CC) by BURST (n-4), in which CC1 with core ancestral clone ST-26 was the largest group including 86% isolates, and CC2, 3, 9, 10 and 13 were first reported in China. MLST profiles of the isolates from 8 infant formula brands were compared. It was found the brands might be potentially tracked by the variety of STs, such as ST-1049 of singleton and ST-1062 of isolate from goat milk source, though they could not be easily tracked just by clonal complex types of the isolates.
