Emerg Infect DiseidEmerging Infectious Diseases1080-60401080-6059Centers for Disease Control89031512626829Research ArticleAn outbreak of Shigella sonnei infection associated with consumption of iceberg lettuce.FrostJ. A.McEvoyM. B.BentleyC. A.AnderssonY.Laboratory of Enteric Pathogens, Central Public Health Laboratory, London, England, UK.Jan-Mar1995112629