Major Food-borne Illnesses Flashcards Preview

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Flashcards in Major Food-borne Illnesses Deck (42)
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1

What pathogens are involved in food-borne INFECTIONS? (6)

1) Salmonella
2) Shigella
3) Listeria
4) Campylobacter jejuni
5) Hepatitis A
6) Norovirus

2

Which pathogens are spore-forming? (3)

1) Clostridium perfringens
2) Bacillus cereus
3) Clostridium botulinum

3

Which pathogen is often found in unpasteurized milk and cheese, ice cream, raw vegetables etc?

Listeria (food infection)

4

Which pathogen is often found in cooked meat, meat products and beans that have slowly been cooled?

Clostridium perfringens

5

Which pathogens are involved in food-borne INTOXICATION? (3)

1) Staphylococcus aureus
2) Bacillus cereus (emetic)
3) Clostridium botulinum

6

What pathogens are involved in food-borne TOXIN-MEDIATED Infections? (3)

1) Clostridium perfringes
2) E.coli
3) Bacillus cerues (diarrheal)

7

Which pathogen has produces two different toxins?

Bacillus cereus
-Emetic (intoxication)
-Diarrheal (toxin-mediated infection)

8

In the emetic toxin formed by B. cereus, what foods are likely to be involved?

Rice products, starchy foods, sauces, puddings, soups, casseroles, pastries and salads

9

In the diarrheal toxin formed by B. cereus, what foods are likely to be involved?

Meats, milk, vegetables and soups

10

What toxin is in involved food such as improperly processed canned foods, low acid food, garlic-in-oil products, grilled and sautéed onions in butter?

C. botulinum

11

What foods are the Hepatitis A virus involved in?

Uncooked foods and produce such as green onions, lettuce, carrots, salads and sandwiches, glazed or iced baked goods.

12

______ involves food such as salads, lettuce, raw vegetables and dairy products

Shigella (food infection)

13

Raw shell fish, raw vegetables, prepared salads and water contaminated with human feces is a risk factor for contamination with the _____, causing a food-borne infection.

Norovirus

14

What is the pathogen with the shortest incubation period? What are the symptoms?

S. aureus (Intoxication)
Rapid incubation period
-Nausea, vomiting, abdominal cramps, changed in BP

15

What pathogen has the longest incubation period? What are the symptoms?

Hepatitis A (15-50 days)
-Fever, loss of appetite, vomiting, diarrhea

16

What is the incubation period of the emetic toxin of b.cereus? diarrheal toxin?

Emetic: 1 to 2-6 hours
Diarrheal: 6-15 hours

17

Which virus will remain for up to two weeks even if symptoms subside?

Norwalk and the Norwalk-like viral agent
(From the Norovirus diesease)

18

Which diseases cause indefinited illnesses?

-Shigella
-Listeriosis

19

(T/F) Although the duration of illness for c.jejuni and heaptitis A ranges from 7-10 days and several weeks/months (respectively) - relapses or not common

False

20

Which pathogens cause watery/bloody diarrhea?

-Shigella
-E.coli
-Diarrheal b.cereus
-C. jejuni

21

Compare and contrast the symptoms of emetic and diarrheal toxins of b.cereus

Emetic: Nausea, occasional vomiting, occasional abdominal cramps and/or diarrhea
Diarrheal: Watery diarrhea, abdominal cramps, pain and nausea

22

What causes lassitude weakness, double vision, difficulty speaking and swallowing and constipation?

C.botulinum

23

What causes abdominal pain, headache, nausea, vomiting, fever and diarrhea?

Salmonella

24

Which pathogen originally produces symptoms similar to salmonella (abdominal pain, headache, nausea, vomiting, fever, diarrhea) but may accelerate to meningitis?

Listeria monocytogenes

25

____ days after ingesting a meal, a customer starts having symptoms such as fever, loss of appetite and jaundice. He also has dark coloured urine. What pathogen has he ingested?

15-50
Hepatitis A

26

Immediately after ingesting a meal, a customer starts experiencing symptoms such as a sudden drop in blood pressure, nausea, vomiting and muscle cramps. What pathogen has he ingested

S. aureus

27

Pathogens such as Salmonella, Shigella, S. aureus, C. perfringens, E. coli and Norovirus often originate from where?

Human intesinal tract

28

Which pathogens are more likely to be found in soil, dirt and water?

-Listeria
-B. cereus
-C. botulinum

29

Which pathogens are most likely to be found from the intestinal tract of domestic and wild animals?

-Salmonella
-Listeria
-C. perfringens
-E.coli (especiallly cattle)
-C. jejuni

30

Make some recommendations to prevent Salmonella contamination

-cook poultry to at least 85 C (185C)
-rapidly cool cooked meat and meat products