Dissecting Listeria monocytogenes persistence and transmission in a retail market using whole-genome sequencing. Listeria monocytogenes

an in-depth study was carried out on CC87 L. monocytogenes isolates from the retail market surveillance by using whole-genome sequencing. The isolates were selected to (i) confirm the persistent contamination of CC87 L. monocytogenes in the retail market, (ii) probe the genetic variations among the persistent CC87 isolates over a year in different niches, iii) to better understand the contamination routes in the retail market, and (iv) explore potential genetic factors of L. monocytogenes persistence.