[B] 1.13 Infectious agents/Bacteria, viruses and fungi as causes of disease Flashcards
1
Q
Infection
A
Spreads from animal to animal through direct or indirect route
2
Q
Invasiveness
A
The pathogen is able to spread inside the organism
(But not all of them)
3
Q
Infectious pathogens: Examples
A
- Parasites
- Fungi
- Bacteria
- Viruses
- Prions
4
Q
Ectoparasites
A
Non-invasive, do not enter the organism
- Effect: Stress, weakening factor
- Vectors (may transfer other parasites/bacteria)
5
Q
Endoparasites (infectious) can be either…
A
- Multicellular
- Unicellular
6
Q
Multicellular endoparasites
A
Damage:
- Stress
- Weakening factor
- Tissue irritation
- Obturating effect
- Thromotisation
- Atrophy
- Autointoxication
7
Q
Unicellular endoparasites
A
- Intracellular (cell-damage e.g babesia)
- Extracellular (E.g toxoplasma → cytotoxic products)
8
Q
Fungal infections
A
- Mycotoxicosis
- Dermatomycosis
- Visceral mycosis
9
Q
Mycotoxicosis elicits…
A
No infection
10
Q
Dermatomycosis
A
- Superficial invasion: Skin, claw, hoof
- Loss of hair, irritation, stress
11
Q
Visceral mycosis
A
- Local inflammation
- Granuloma formation
- Thalus-formation
- Thrombotisation
- Metastasis
12
Q
Bacterial infections
A
Obligatory & Facultative pathogens
- IC bacteria
- EC bacteria
- Bacterial intoxications
- Enterosorption/Enterotoxaemia
13
Q
IC bacteria
A
- Chlamydophila
- Rickettsia
- Damage: ~virus
14
Q
EC bacteria
A
Exo- and endotoxins
- → Necrosis, inflammatory reaction
15
Q
Bacterial intoxication
A
No infection
E.g Botulism
