Lecture 4 Flashcards
1
Q
What is required for an infection to occur? (2)
A
- Overwhelming pathogen load
2. Compromised host defences
2
Q
What does disease/pathology/damage result from? (2)
A
- Production of toxins
2. Invasion of tissues
3
Q
What organisms are saprophytes/environmental? (2)
A
Rhodococcus equi & Aspergillus
4
Q
What organism is a commensal?
A
CLostridium spiroforme
5
Q
What organisms are opportunistic pathogens? (3)
A
Staphylococcus app
Acinetobacter spp
Dermatophilus congolensis
6
Q
Opportunistic pathogen def
A
Can set up infection when given access to a normally sterile or protected site
7
Q
What are the 3 components of the epidemiological triad?
A
Favourable envy
Virulent agent
Susceptible host
8
Q
Zoonosis def?
A
Infectious diseases of animals which can be transmitted to humans