Haemophilus Flashcards Preview

RUSVM Bacteriology Gram Negatives > Haemophilus > Flashcards

Flashcards in Haemophilus Deck (22):
1

Haemophilus, Histophilus - description

Gram negative coccobacilli, facultative anaerobes - Fastidious -

2

What make Haemophilus, Hisophilus fastidious?

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

3

Haemophilus species

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

4

What causes Septicemic glasser disease in swine?

Haemophilus parasuis!!

5

When I say Glasser's, you say

Haemophilus parasuis!!!

6

Histophilus - in Cattle & sheep

Histophilus somni "H. somni" - Lipooligosaccharides (LOPS)

7

Haemophilus, Histophilus reservoir

Upper respiratory tract - Lower genital tract

8

Haemophilus, Histophilus - Control

Must use all in / All out production

9

Haemophilus, Histophilus - Pathogenesis of systemic disease

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

10

Haemophilus, Histophilus in cattle - causative species

Histophilus somni!

11

H. somni infection in cattle

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

12

Haemophilus, Histophilus in swine

Haemophilus parasuis!!

13

Haemophilus parasuis in swine

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

14

Haemophilus, Histophilus in Poultry

Infectious Coryza!!!! Avibacterium paragallinarum!!

15

What is the causative species of infectious Coryza in poultry?

Avibacterium paragallinarum!

16

What does Avibacterium paragallinarum cause

Infectious Coryza in poultry!!

17

Describe Infectious Coryza

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

18

Haemophilus, Histophilus in Sheep

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

19

Haemophilus, Histophilus in Dogs - infective species

Haemophilus harmoglobinophilus

20

Haemophilus, Histophilus in cats

Haemophilus felis - Conjunctivitis!

21

Haemophilus felis DDx in cats

DDx - Chlamydophila & mycoplasma are more common

22

Haemophilus / Histophilus culture

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