title: Update: Multinational listeriosis outbreak due to 'Quargel', a sour milk curd cheese, caused by two different L. monocytogenes serotype 1/2a strains, 2009-2010.
abstract: We previously reported an outbreak of listeriosis in Austria and Germany due to consumption of Quargel cheese. It comprised 14 cases (including five fatalities) infected by a serotype 1/2a Listeria monocytogenes (clone 1), with onset of illness from June 2009 to January 2010. A second strain of L. monocytogenes serotype 1/2a (clone 2) spread by this product could be linked to further 13 cases in Austria (two fatal), six in Germany (one fatal) and one case in the Czech Republic, with onset of disease from December 2009 to end of February 2010.
authors.affiliation: Austrian Agency for Health and Food Safety (AGES), Vienna, Austria. rainer.fretz@ages.at
authors.forename: R
authors.initials: R
authors.lastname: Fretz
authors.forename: J
authors.initials: J
authors.lastname: Pichler
authors.forename: U
authors.initials: U
authors.lastname: Sagel
authors.forename: P
authors.initials: P
authors.lastname: Much
authors.forename: W
authors.initials: W
authors.lastname: Ruppitsch
authors.forename: A T
authors.initials: AT
authors.lastname: Pietzka
authors.forename: A
authors.initials: A
authors.lastname: Stöger
authors.forename: S
authors.initials: S
authors.lastname: Huhulescu
authors.forename: S
authors.initials: S
authors.lastname: Heuberger
authors.forename: G
authors.initials: G
authors.lastname: Appl
authors.forename: D
authors.initials: D
authors.lastname: Werber
authors.forename: K
authors.initials: K
authors.lastname: Stark
authors.forename: R
authors.initials: R
authors.lastname: Prager
authors.forename: A
authors.initials: A
authors.lastname: Flieger
authors.forename: R
authors.initials: R
authors.lastname: Karpísková
authors.forename: G
authors.initials: G
authors.lastname: Pfaff
authors.forename: F
authors.initials: F
authors.lastname: Allerberger
mesh_terms: D002611:Cheese / Q000382:microbiology*; D003132:Commerce; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D005060:Europe / Q000453:epidemiology; D005260:Female; D005506:Food Contamination / Q000706:statistics & numerical data*; D005517:Foodborne Diseases / Q000453:epidemiology* / Q000382:microbiology; D006801:Humans; D015994:Incidence; D008089:Listeria monocytogenes / Q000145:classification* / Q000302:isolation & purification; D008088:Listeriosis / Q000453:epidemiology* / Q000382:microbiology; D008297:Male; D029322:Norovirus / Q000302:isolation & purification; D011159:Population Surveillance; D018570:Risk Assessment / Q000379:methods; D012307:Risk Factors; D012703:Serotyping; D013045:Species Specificity