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36 Cards in this Set
- Front
- Back
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Shigella is ranked ____ in number of illness cases.
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3rd
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How is this bacteria transmitted?
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Oral/fecal route
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What age group does this primarily affect?
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Young children (dirty diapers etc)
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Shigellosis is also known as _____
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dysentary
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Dysentary means _____
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bloody diarrhea
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What is Shigella characterized by?
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bloody stool, mucus and abdominal pain.
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T or F. Historically associated with military seiges
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true
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Common in areas of poor hygiene, like natural disasters Katrina)
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fact
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Is Shigella gram neg or gram pos
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gram negative
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Does it ferment lactose?
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no
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If it doesn't ferment lactose, that means it is a _____
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non coliform
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Member of the family Entero_________
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bacteriaceae
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Genetically similar to _____
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Ecoli
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What makes shigella different than Ecoli?
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it is non motile and lactose negative (ecoli IS motile and IS a coliform)
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How many cells are sufficient for Shigella infection?
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100
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Using the conventional FDA-BAM methods of isolation is very labor intensive and can take up to how long?
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10 days
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Review isolation methods on page 131
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see other side
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Is shigella weak or strong
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weak, it's a pussy!
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Shigella will not hold to salt, aci, and heat
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fact
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T or F. You can be asymptomatic and shed shigella for weeks or months
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true
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Shigella can survive for up to ______ in water
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4 months
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Shigella can survive for up to ____ to _____ in cheese, flour, milk, seafood, tomato juice
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3-12 weeks
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What kinds of inhibitory food ingredients will fight shigella
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mayonnaise, vinegar, salt, sodium benzoate
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Is shigella inactivated during freezing/thawing?
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yes!
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What is Shigella's growth temperature?
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35-37
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Is is meso or psychrotophic
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psychrotrophic (same as salmonella)
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Will survive in a pH level of ____ to _____
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4.8-6.5
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There are three different means of transportation. What are they
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person-person, foodborne, waterborne
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What is the infectious dose of shigella
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200-5000 cells, very low
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What is the incubation period for shigella
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1-7 days
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Name symptoms of Shigella
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severe abdominal pain, mild water diarrhea to severe dysentary, cramps, fever
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Shigella has a self limiting recovery time of ______
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1-2 weeks
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T or F. Shigella causes more hospitalizations than most other bacterial diseases
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True
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Complications of these disease can include _____ _____ or ______
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severe dehydration, perforated intestine and septicemia
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Once again, practitioners try to avoid antibiotics because ____
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it is creating a stronger strain that is resistant to most antibiotics, and it also interrupts the natural flora that get rid of bacteria.
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Documented vehicles of infection include things like potato, shrimp, chicken, baked goods, salad bars.... why
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They aren't highly acidic.
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