Outbreak of Shigella sonnei infection traced to imported iceberg lettuce.
Kapperud G, Rørvik LM, Hasseltvedt V, Høiby EA, Iversen BG, Staveland K, Johnsen G, Leitao J, Herikstad H, Andersson Y.
J Clin Microbiol. 1995 Mar; 33(3):609-14.
[J Clin Microbiol. 1995]