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1 cdc

REHS CDC ch 1

QuestionAnswer
Ludvig von Bertalanffy systems theory in the 40’s- wholeness
System a set of elements that interact to achieve a goal
Four elements of a system input, processes, output, feedback
Input energy or raw materials that enter a system
Processes the way input is transferred
Output the product or service that results from the process
Feedback information that can be used to evaluate and monitor the system
Food service “feedback” Customer health, satisfaction, profit
Food service “internal system elements” people, equipment, process, foods, economics
Food service “processes” receive, store, prep, cook, cool, reheat, hold, assemble, serve
Food service “outputs” final food item
Foodservice feedback of illness customer illness effects economics
Whole is more than the sum of its parts isolated parts characteristics are not always representative of whole
Public health pyramid host (epi), agent (lab) and Environment
Environment portion of pyramid goes beyond agent – attempts to identify (2) activities that caused disease and circumstance
Contributing Factor ”What” happened to cause illness or Immediate Failure most likely to cause illness or outbreak (example is undercooked burger)
Environmental Antecedent ”why” failure happened or spectrum of circumstances that set stage (example is improper calibration or human error)
Epi Investigation Results agent, vehicle, what happened
Systems Investigation Results What happened, why did it happen and what can be done now?
Knowing Environmental Antecedent allows us to address underlying problem and develop improved prevention strategies
Created by: sanitarianpankey
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