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Occurrence of Listeria monocytogenes serovar 1/2b in food samples tested in Austria 2013: cluster strain in comparison with non-cluster strains. Outbreak investigation started on 22 January 2013. The producer of the unaged soft cheese, producer A, was first contacted on 26 February, and the producer of the ready-to-eat meat, producer B, on 4 March. Raised awareness and resulting intensification of in-factory sanitation caused the cluster strain to disappear.
