10 - Haemophilus

Question 1

(Haemophilus)

1. gram?

2. shape?
3. sometimes form what?
4. motile?
5. spore forming?

6. oxygen?

7. capsules?

Answer 1

1. negative

2. coccobacillary rods (pleomorphic)

3. long filaments
4. no
5. no

6. aerobic and facultatively anaerobic

7. yes

Question 2

(Haemophilus)

1. most species require on or both of the folliwing factors for growth… what are they?

Answer 2

1. X factor (haemin)

2. V factor (Co enzyme 1)

nicotinamide adenine dinucleotide (NAD+)

Question 3

(Haemophilus)

1. Most species are associated with humans and animals as what?

2. some are potential pathogens

Answer 3

1. COMMENSALS on mucus membranes of the upper digestive, respiratory and genital tracts

Question 4

(Haemophilus)

1. what are two modes of infection?

Answer 4

1. inhalation, fomites

Question 5

(GENUS: HAEMOPHILUS)

(Haemophilus Parasuis)

(Glasser’s disease)

1. fibrinous inflammation of serous membranes
2. lesions on pericardium, pleura, peritoneum, joints
3. Usually occur in what?

Answer 5

3. young pigs (weaning, transport, management stress)

Question 6

Answer 6

Question 7

Question 8

Answer 8

Question 9

(Genus. HISTOPHILUS)

(Histophilus Somni)

1. what in cattle?
2. involves what?

3. DOES IT REQUIRE X an V factors?

Answer 9

1. infectious thromboembolic meningoencephalitis (TEME)
2. CNS

3. NO

Question 10

(Genus. HISTOPHILUS)

(Histophilus Somni)

1. Colonizes what to get into what?
2. causes what?

3. adheres to vascular endothelial cells resulting in what?

4. Localises in what?

5. Causes respiratory distress - pneumonia

7. fever, staggering, knuckling of fetlocks (flexing of fetlock joints), stiffness paralysis death

Answer 10

1. nasal cavity, to get into blood
2. bacteremia (causes cerebral thrombus)

3. damage and exposure of subendothelial collagen followed by platelet aggregation and thrombus

4. CNS

Question 11

(Genus. HISTOPHILUS)

(Histophilus Somni)

1. get joint infections –> arthritis
2. reproductive failure
3. endometritis
4. late abortion
5. more than one syndrome may be seen in the same animal
6. mastitis - sometimes

Question 12

Genus. HISTOPHILUS)

(Histophilus Somni)

(TEME)

1. brains contain hemorrhagic areas
2. firbin thrombi in blood vessels of brain and meninges

Answer 12

Question 13

(Histophilus Somni)

(predisopsing factors for TEME)

stress of shipping, climactic change, crowded conditions

Question 14

Question 15

(Avibacterium)

(Avibacterium Paragallinarum)

1. requires x and v factors?
2. gram?
3. motile?
4. capsules?
5. bi-polar?
6. what in chickens?
7. acute or chronic?

Answer 15

1. yes
2. neg
3. no
4. yes
5. yes
6. infectious coryza
7. either

Question 16

What serves as the main reservior of infection?

Answer 16

carrier birds

Question 17

there are a bunch of lesions and stuff you may want to look at as well

Answer 17