2/16/2016 Outbreak Outbreak boydir-Parsley Asymptomatic people as reservoirs Fresh parsley Individuals recovering from shigellosis shed 1998-2 month period Shigella for months in their feces 7 outbreaks of Shigella sonnei ·2-month period most had eaten at restaurants that served -52 people who at the same cafeteria came chopped,uncooked parsley down with shigellosis PFGE and epidemiological traceback one employ had just returned from implicated a farm in Mexico Morocco .Changes in food handling process resulted -7 individuals had stool samples positive for -No chopping and holding large quantities of the same strain in Morocco at the same parsley at room temperature time Water for irrigation and post-harvesting Washing hands before food prep is vital practices controlled for contamination Transmission occurs by the fecal-oral Introduction route Dosage is as few as 10-100 organisms Shigellosis or bacillary dysentery is Reservoirs are humans and other caused by Shigella species primates Shigellosis has had a major impact on military operations Military sieges have almost always spawned dysentery,which caused large numbers of casualties Natural disasters also lead to shigellosis2/16/2016 2 Outbreak Asymptomatic people as reservoirs • Individuals recovering from shigellosis shed Shigella for months in their feces • 2-month period – 52 people who at the same cafeteria came down with shigellosis - one employ had just returned from Morocco - 7 individuals had stool samples positive for the same strain in Morocco at the same time - Washing hands before food prep is vital Outbreak Fresh parsley • 1998 – 2 month period • 7 outbreaks of Shigella sonnei Shigella boydii - Parsley • 7 outbreaks of Shigella sonnei – most had eaten at restaurants that served chopped, uncooked parsley - PFGE and epidemiological traceback implicated a farm in Mexico • Changes in food handling process resulted - No chopping and holding large quantities of parsley at room temperature - Water for irrigation and post-harvesting practices controlled for contamination • Transmission occurs by the fecal-oral route • Dosage is as few as 10-100 organisms • Reservoirs are humans and other primates • Shigellosis or bacillary dysentery is caused by Shigella species Introduction • Shigellosis has had a major impact on military operations • Military sieges have almost always sp n d d s nt r hich c us d l r spawned dysentery, which caused large numbers of casualties • Natural disasters also lead to shigellosis