3/13/2016 Learning Objectives Food 1.Use basic biochemical characteristics to identify yersinia 2.Understand what conditions in foods favor Yersinia growth Chapter 18 AN INTRODUCTION 3.Recognize,from symptoms and time of onset,a case of foodborne illness caused by yersinia Yersinia 4.Choose appropriate interventions(heat, enterocolitica her)thatpreven 5.Identify environmental sources of the organism 6.Understand the role of yersinia toxins and virulence factors in causing foodborne illness Outbreak Outbreak Brawn (head cheese)is a Yersinia serotype O:3 is the dominate traditional Christmas favorite cause of yersiniosis in US,Norway. in Norway Canada,Japan,and Europe 2006,11 patients developed March 2011,21 cases of yersiniosis yersiniosis were linked to bagged salad mix .4 hospitalized and 2 died contaminated with y.enterocolitica O:9 Pigs carry yersinia in their nasal cavities that serves as a Cases of yersiniosis are often liked to reservoir consumption of pork products Brawn contains a large amount of lard which may protect the organism during cooking 3/13/2016 1 Chapter 18 Yersinia enterocol enterocol t ca i i Learning Objectives 1. Use basic biochemical characteristics to identify Yersinia 2. Understand what conditions in foods favor Yersinia growth 3. Recognize, from symptoms and time of onset, a case of foodborne illness caused by Yersinia 4. Choose appropriate interventions (heat, preservatives, and formulations) that prevent the growth of Yersinia 5. Identify environmental sources of the organism 6. Understand the role of Yersinia toxins and virulence factors in causing foodborne illness Outbreak • Yersinia serotype O:3 is the dominate cause f i i i i US N of yersiniosis in US, Norway, Canada, Japan, and Europe • March 2011, 21 cases of yersiniosis were linked to bagged salad mix contam nated w th inated with Y. enterocol Y. enterocol t ca i i O 9: • Cases of yersiniosis are often liked to consumption of pork products Outbreak • Brawn (head cheese) is a traditional Christmas favorite in Norway • 2006, 11 patients developed yersiniosis • 4 hospitalized and 2 died • Pigs carry Yersinia in their nasal i i h l cavities that serves as a reservoir • Brawn contains a large amount of lard which may protect the organism during cooking