POPM 4040 Lecture 11: POPM 4040 Lecture : botulism
22 Dec 2018
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Other foodborne viruses: fecal-oral route: food/water/person to person, astrovirus: acute gi illness long(er) incubation: 4 days long(er) duration: 7 days mild, less vomiting than norovirus, rotavirus: young children, high mortality in developing countries. Vomiting, fever, watery diarrhea incubation: 24-72 hours duration: 4 to 6 days. Need to be careful about harvesting areas. Depuration / relaying: keep shellfish in clean water for a period of time to reduce / Control shellfish harvesting irrigation water for fresh produce potable eliminate viruses quality. Water chlorination (typically 0. 04- 2. 0 mg/l canada; can survive short periods at 1. 0 mg/l) Heating surfaces hydrostatic pressure juices gamma radiation (note: high doses needed vs bacteria, e. g. salmonella), therefore not used uv treatment of water. Fb viruses: prevention: food service/individual-level (training is important!) Food handlers should stay home when sick. Refrigeration / freezing some viruses (e. g. norovirus) survive very well. Wash fruits/veggies (with potable water) shown to reduce viral load (but not eliminate)
