08 - Pasteurella

Question 1

(Pasteurella - Important Characterisitcs)

1. how big?
2. Gram?
3. pleomorphic (vary in size and form) - have capsules?
4. oxygen use?
5. motile?
6. spore forming?
7. how do they grow in presence of bile salts?
8. attach CHO? grow on blood agar?
9. ferment sucrose? grow on McConkey’s agar?
10. catalase positive? oxidase positive?

Answer 1

1. very small (0.2 X 1-2 um)
2. negative, non-acid fast bacterial rods or coccobacilli
3. in virulent form
4. aerobic or facultatively anaerobic
5. no
6. no
7. not well
8. weakly; yes
9. yes, no
10. both positive

Question 2

(Pasteurella)

1. Grow best in what?
2. Colonies look like what?
3. colonies have what odor?

Answer 2

1. media supplemented with blood and serum
2. round, grayish, mucoid (produce thick hyaluronic acid capsule)
3. fruitish or sweet

Question 3

(Pasteurella)

1. Paseurella multocida - can infect what?
2. Found where in a wide variety of animals?
3. 50% of tonsils of normal dogs
4. isolated from nasopharynx of healthy humans

Answer 3

1. many different animal species
2. upper respiratory tract

Question 4

Answer 4

Question 5

(Pasteurella multocida)

1. Serotypes - identified on what basis?
2. Capsular types are subdivided further into somatic types

how many types identified so far?

3. serotype is described by stating what?
4. What are the most prevalent capsule type?

Answer 5

1. of differences in capsular Polysaccharides and cell wall lipopolysaccharides
2. 16
3. both somatic and capsular groups (eg Serotype 6:A)
4. type A

Question 6

(Pasteurella Multocida)

1. P. multocida survive and remain virulent in dried blood for how long?
2. Survive in carcass how long?
3. What are vectors for P. multocida?
4. transmission?

Answer 6

1. about 3 weeks
2. as long as eighteen months
3. raccoons, skunks, wild fowl
4. airborne droplets, contaminated feed and water

Question 7

(Pasteurella multocida)

1. normally present as normal flora where?
2. When resistance of the animal is reduced by viral, mycoplasma, other bacterial infection(s) damage mucociliary clearance mechanisms in the trachea and bronchi, or shipment, poor nutrition, weather or overcrowding, Pasteurella multocida acts as a what?

Answer 7

1. in the oropharynx
2. secondary invader (pneumonic pasterurllosis)

Question 8

(Pasteurella Multocida)

(Aves - Bird)

1. Presence is almost invariably associated with what?
2. Do healthy birds carry the organism?
3. affects which birds?
4. which is more susceptible… chickens or turkeys?
5. waterfowl, pigeons are highly susceptible

Answer 8

1. acute or chronic disease
2. NO
3. all types
4. turkeys

Question 9

(Pasteurella Multocida)

(Diseases, Clinical Signs and Pathogenesis)

(Hemorrhagic Septicemia)

(Cattle)

1. Disease of ruminant Bovids (Cattle, Camels, goats, sheep)
2. rainy season, tropical, sub-tropical regions
3. high fever (105-107)
4. dysentery, edema of the throat, neck and brisket
5. High mortality?
6. survivors can show what?
7. Blood stained fluid accumulation

Answer 9

5. yes - many die within 24 hours of onset
6. pneumonia

Question 10

(Pasteurella Multocida)

(Diseases, Clinical Signs and Pathogenesis)

(Hemorrhagic Septicemia)

(Cattle)

Answer 10

Question 11

(Paseurella Multocida - cattle Diagnosis)

Answer 11

(Disinfect with 0.5% phenol)

Question 12

(Paseurella Multocida)

(Diseases, Clinical Signs, and Pathogenesis)

(Avies)

(Fowl Cholera)

1. affects what?
2. do heatlhy birds carry the organism?
3. turkeys or chickens more susceptible?

Answer 12

1. domestic poultry and wild birds
2. NO
3. turkeys

Question 13

(Pasteurella Multocida in pet birds)

1. often isolated from pets or wild birds that are what?
2. this organism is common where?
3. Birds that are bitten by cats should receive prompt attention. Fatal septicemia can develop rapidly if untreated

Answer 13

1. attacked by wild cats
2. in cat’s mouth

Question 14

(Pasteurella Multocia)

(Avies)

1. are turkeys or chickens more susceptible?
2. are older or younger chickens more suseptible?
3. chornically infected birds considered major source of infection
4. Dissemination within flock primarily by what?

Answer 14

1. turkeys
2. older

some breeds of chicken are more susceptible

4. excretions from mouth, nose, and conjuctiva of diseased birds that contaminate their environment

Question 15

Answer 15

Question 16

Answer 16

Question 17

(Fowl Cholera in Birds - Diagnosis)

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Answer 20

Question 21

Answer 21

Question 22

Answer 22

Question 23

(Paseurella Mutlocida)

1. Common in mouth and throat of healthy dogs and cats
2. Do canine and feline strains play an important pathogenic role in their natural hosts?
3. PM is one of the bacterial organisms isolated from what?

Answer 23

2. no
3. bite abscesses or cellulitis lesions

Question 24

(Pasteurella Multocida)

1. Humans are accidental hosts
2. Acquire from what?
3. infection is limited to what?
4. P. Canis most commonly isolated from what?
5. P. multocida sub species multocida and septica- most commoly isolated from what?

Answer 24

2. cat or dog bits
3. wound site
4. dog bites
5. cat bites