0161 - Investigation and Control of Outbreaks of Foodborne...

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Investigation and Control of Outbreaks of Foodborne Illness Ralph Cordell, PhD
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0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 1988 1989 1990 1991 1992 Number of cases of outbreak-associated food poisoning reported to the US Centers for Disease Control by year 1988-1992 Year N u m b e r o f c a s p t d
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Types of Foodborne Outbreaks Types of Foodborne Outbreaks Type A Outbreak Target population is identifiable - attendance lists, etc. - can determine incidence of illness. Exposure represented by a known event though specific source may be unknown.
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Types of Foodborne Outbreaks Types of Foodborne Outbreaks Type B Outbreak Target population is unknown - cases are identified through surveillance - must use case- control approach. Exposure is unknown, best clues are demographic distribution of cases. Pathogen is known.
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Severity - persons must realize they are ill Communication - must recognize others are ill Notification - must contact local health authorities Investigation File Report Type A Type A
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School Outbreak School Outbreak Friday - November 21 - 4:30 PM Took call from the Vice-Principal at a local elementary school. They had been called by several parents who reported children becoming violently ill during the bus ride home from school. ..
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Initial Field Visit 5:00 PM - Field visit to school A Fire officials were unable to detect gas leaks, exhaust fumes or elevated CO2. Contact with parents of children absent that day failed to detect similar cases. The only break from routine was
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0161 - Investigation and Control of Outbreaks of Foodborne...

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