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= Answers – Foodborne Illness, Pathogens, = = = = =
Dairy, Beef, Poultry, Aquaculture & Animal
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Welfare =
200 Exam Questions with Verified Answers &
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= Detailed Rationales | Updated 2026/2027 = = = = =
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SECTION 1: FOODBORNE ILLNESS & PATHOGENS
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= (Questions 1-35) = =
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Question 1: = =
A foodborne illness outbreak is confirmed when:
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A) One person reports symptoms after eating
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B) Two or more people have the same symptoms after eating the sam
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e food = =
C) A food handler tests positive for a pathogen
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D) The CDC issues a food recall
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,Answer: B) Two or more people have the same symptoms after eat
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ing the same food
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Rationale: An outbreak is defined as two or more people experiencin
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g the same illness after eating the same food, confirmed by laborator
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y analysis . This definition is critical for identifying and responding to p
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otential public health threats.
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Question 2: = =
Which of the following is NOT one of the "Big Six" highly contagious p
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athogens? =
A) Norovirus =
B) Shiga toxin-producing E. coli (STEC)
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C) Clostridium perfringens = =
D) Salmonella Typhi = =
Answer: C) Clostridium perfringens
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Rationale: The "Big Six" are Norovirus, Salmonella Typhi,
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Shigella, STEC, Hepatitis A, and Nontyphoidal Salmonella . Clostridiu
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m perfringens is a common foodborne illness but not in the "Big Six" req
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uiring immediate reporting.
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,Question 3: = =
Which pathogen is commonly associated with raw or undercooked p
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oultry? =
A) Salmonella =
B) E. coli O157:H7
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C) Clostridium perfringens D) Listeria monocytogenes
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Answer: A) Salmonella = = =
Rationale: Raw or undercooked poultry is the primary vehicle for Sal
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monella . Proper cooking to 165°F destroys the pathogen.
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Question 4: = =
Which pathogen is commonly associated with ground beef?
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A) Salmonella =
B) Shiga toxin-producing E. coli (E. coli O157:H7)
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C) Campylobacter =
D) Clostridium botulinum = =
Answer: B) Shiga toxin-producing E. coli (E. coli O157:H7)
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, Rationale:
Ground beef is commonly associated with E. coli O157:H7
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= . Grinding distributes surface bacteria throughout the meat, requiring
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cooking to 155°F. = = =
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Question 5: = =
Which food is most commonly associated with Listeria monocytogene
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s? =
A) Raw poultry = =
B) Deli meats and unpasteurized dairy
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C) Canned vegetables = =
D) Dried grains = =
Answer: B) Deli meats and unpasteurized dairy
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Rationale: Listeria monocytogenes is associated with deli meats, soft
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cheeses, and unpasteurized dairy . It can grow at refrigeration temp
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eratures, making it particularly concerning for ready-to-eat foods.
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Question 6: = =
Which pathogen causes the most hospitalizations among foodborne i
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llnesses? =