Lecture 13-Rare Bacterial Food-Borne Infections

Question 1

Brucellosis

Answer 1

Gram negative, nonmotile, nonsporeforming, anerobic, rods

Question 2

Is Brucellosis pathogenic to only humans?

Answer 2

No, humans and animals

Question 3

Where to infected animals carry the organism?

Answer 3

In the uterus of pregnant animals and in the mammary glands of lactating females

Question 4

Is pasteurization effective against killing Brucella cells?

Answer 4

Yes

Question 5

What are the symptoms of Brucellosis?

Answer 5

Fever, profuse sweats, body aches, aching joints, chills and weakness
-Symptoms appear in 3-21 days following consumption of contaminated food

Question 6

What is the most common route of infection for Brucellosis?

Answer 6

Drinking/consuming raw milk

Question 7

Streptococcus pyogenes

Answer 7

• has been isolated from lactating cows with mastitis
• gram positive
• d/t consumption of raw milk

Question 8

What are some control measures for streptococcus pyogenes

Answer 8

milk pasteurization, people suffering from infection should not handle ready-to-eat foods

Question 9

Coxiella burnetii

Answer 9

-causes Q fever

Question 10

Can food-producing animals carry coxiella burnetii without symptoms?

Answer 10

yes

Question 11

Symptoms of Q fever

Answer 11

fever, malaise, anorexia, muscular pain, headache

Question 12

When do symptoms for coxiella burnetii appear?

Answer 12

2-4 weeks after infection

Question 13

What is the most heat resistant bacteria found in raw milk?

Answer 13

Coxiella burnetii (Cb)

Question 14

Is Coxiella Bunetii killed by pasteurization?

Answer 14

Yes, but time/temp must be higher because of this organim