- Infectious Microorganisms exist in reservoirs e.g. environment/ animals/ infected humans
- Transmitted via direct contact or indirectly by
vectors or direct exposure
-Human to human transmission: by aerolized microorganisms in droplets & physi
2 of 5
Invasion
- Infectious agent can invade surrounding tissues/ other sites
- Developed mechanisms to penetrate tissues & avoid hosts nonspecific and specific defences (inflammation and immunity)
3 of 5
Multiplication
- Warm, nutrient filled host environment
-Undergo rapid multiplication: replicate within infected cells (viral) & replicate in macrophages & other cells (bacterial)
4 of 5
Spread
- Produce localized infections without spread to other regions of the body.
-Others highly invasive: may enter lymphatics,
blood, internal organs.
-Successful spread: relies on virulence factors (adhesion molecules, toxins & protection again
5 of 5
Other cards in this set
Card 2
Front
- Infectious Microorganisms exist in reservoirs e.g. environment/ animals/ infected humans
- Transmitted via direct contact or indirectly by
vectors or direct exposure
-Human to human transmission: by aerolized microorganisms in droplets & physi
Back
Colonisation
Card 3
Front
- Infectious agent can invade surrounding tissues/ other sites
- Developed mechanisms to penetrate tissues & avoid hosts nonspecific and specific defences (inflammation and immunity)
Back
Card 4
Front
- Warm, nutrient filled host environment
-Undergo rapid multiplication: replicate within infected cells (viral) & replicate in macrophages & other cells (bacterial)
Back
Card 5
Front
- Produce localized infections without spread to other regions of the body.
-Others highly invasive: may enter lymphatics,
blood, internal organs.
-Successful spread: relies on virulence factors (adhesion molecules, toxins & protection again
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