Lecture 17- Spiral Gram Negative Bacteria

Question 1

Characteristics of Campylobacter

Answer 1

Seagull shape
Gram negative rod
Opportunistic
Extracellular
Microaerophilic

Question 2

What Campylobacter species is commonly found in raw chicken?

Answer 2

jejuni

Question 3

What demyelinating disease is caused by Campylobacter jejuni?

Answer 3

Guillain-Barre syndrome

Question 4

What Campylobacter speices is found in large animals?

Answer 4

fetus

Question 5

What disease is caused by Campylobacter fetus subsp. venerealis?

Answer 5

Subclinical preputial infection in bulls
Early embryonic death

Question 6

What disease is caused by Campylobacter fetus subsp. fetus

Answer 6

Late term abortion
Liver necrosis of fetus with donut-like lesions

Question 7

How is Campylobacter fetus subsp. fetus spread

Answer 7

Oral/ingestion

Question 8

Characteristics of Vibrio cholerae

Answer 8

Toxigenic
Survival in salt water

Question 9

Disease caused by Heliobacter

Answer 9

Stomach ulcers- humans
Hepatocellular tumors- mice
Hypergastrinemia and peptic ulcers- ferrets

Question 10

Virulence factor of Helicobacter pylori

Answer 10

Extracellular urease (acid-neutralizing)

Question 11

Diagnosis of Helicobacter

Answer 11

Urease breath test

Question 12

Characteristics of Lawsonia intracellularis

Answer 12

spiral
gram negative
obligate intracellular
cannot grow in lab

Question 13

Disease caused by lawsonia intracellularis

Answer 13

porcine proliferative enteropathy (may look similar to Johne’s disease)