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RUSVM Bacteriology Gram Negatives > Haemophilus > Flashcards

Haemophilus Flashcards

1
Q

Haemophilus, Histophilus - description

A

Gram negative coccobacilli, facultative anaerobes - Fastidious -

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2
Q

What make Haemophilus, Hisophilus fastidious?

A

X factor (porphyrins (heme)) & V factor (Nicotinamide adenine dinucleotide)

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3
Q

Haemophilus species

A

H. paragallinarium (Now Avibacterium) & H. parasuis (Glasser’s Dz in swine)

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4
Q

What causes Septicemic glasser disease in swine?

A

Haemophilus parasuis!!

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5
Q

When I say Glasser’s, you say

A

Haemophilus parasuis!!!

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6
Q

Histophilus - in Cattle & sheep

A

Histophilus somni “H. somni” - Lipooligosaccharides (LOPS)

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7
Q

Haemophilus, Histophilus reservoir

A

Upper respiratory tract - Lower genital tract

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8
Q

Haemophilus, Histophilus - Control

A

Must use all in / All out production

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9
Q

Haemophilus, Histophilus - Pathogenesis of systemic disease

A

Contamination w/stress/injury –> Attachment & escape from immune system - Capsule, LOS, IgBPs –> Thrombosis, necrosis (All have suppurative components: serofibrinous / Fibrinopurulent)

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10
Q

Haemophilus, Histophilus in cattle - causative species

A

Histophilus somni!

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11
Q

H. somni infection in cattle

A

Thromboembolic meningoencephalitis - Pneumonia (w/shipping fever complex of pathogens) - Septicemic disease - Abortion

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12
Q

Haemophilus, Histophilus in swine

A

Haemophilus parasuis!!

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13
Q

Haemophilus parasuis in swine

A

GLASSER’S DISEASE - Polyserositis!!!! - Pneumonia & septicemia - (Synergistic effect with swine influenza virus & other bacteria like pasteurella, mycplasma) & Septicemic diseases (young stressed weaned pigs)

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14
Q

Haemophilus, Histophilus in Poultry

A

Infectious Coryza!!!! Avibacterium paragallinarum!!

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15
Q

What is the causative species of infectious Coryza in poultry?

A

Avibacterium paragallinarum!

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16
Q

What does Avibacterium paragallinarum cause

A

Infectious Coryza in poultry!!

17
Q

Describe Infectious Coryza

A

Caused by Avibacterium paragallinarum - Acute contagious upper respiratory infection! Low mortalities, loss of productivity

18
Q

Haemophilus, Histophilus in Sheep

A

Histophilus somni*** - Respiratory & mammary infections, epididimitis of immature rams - (DDx: Brucella - Primary for otitis & epididymitis)

19
Q

Haemophilus, Histophilus in Dogs - infective species

A

Haemophilus harmoglobinophilus

20
Q

Haemophilus, Histophilus in cats

A

Haemophilus felis - Conjunctivitis!

21
Q

Haemophilus felis DDx in cats

A

DDx - Chlamydophila & mycoplasma are more common

22
Q

Haemophilus / Histophilus culture

A

Growth factor requirements : XV, X, or V (satellitism X or V factor impregnated filter papers) - Chocolate agar!!

RUSVM Bacteriology Gram Negatives (26 decks)

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