title: Occurrence of genetic variants of Listeria monocytogenes strains.
abstract: Isolates of Listeria monocytogenes saved from outbreaks of listeriosis, cases of sporadic listeriosis, and similar events do not always belong to a solitary genetic variant. Variants of the same strain may have evolved from a unique clone, and plasmid loss or gain and phage-mediated genetic changes are suggested as the main mechanism. Some of these reports are summarized in this short communication.
authors.affiliation: School of Hospitality, Culinary Arts, and Meal Science, Örebro University, Grythyttan, Sweden. Listeria@Telia.com
authors.forename: Wilhem
authors.initials: W
authors.lastname: Tham
authors.forename: Gloria
authors.initials: G
authors.lastname: Lopez-Valladares
authors.forename: Seved
authors.initials: S
authors.lastname: Helmersson
authors.forename: Stefan
authors.initials: S
authors.lastname: Wennström
authors.forename: Anders
authors.initials: A
authors.lastname: Österlund
authors.forename: Marie-Louise
authors.initials: ML
authors.lastname: Danielsson-Tham
mesh_terms: D004196:Disease Outbreaks; D016521:Electrophoresis, Gel, Pulsed-Field; D005506:Food Contamination / Q000032:analysis; D005516:Food Microbiology; D006801:Humans; D008089:Listeria monocytogenes / Q000235:genetics* / Q000302:isolation & purification; D008088:Listeriosis / Q000453:epidemiology / Q000382:microbiology*; D020641:Polymorphism, Single Nucleotide