Infection
- Created by: clare surgenor
- Created on: 16-03-22 21:04
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- Process of Infection
- 1.Colonization
- infectious microorganism exist in reservoir
- transmitted by direct contact or by vectors
- microorganism stable adherence to the tissues through specific surface receptors
- transmitted by direct contact or by vectors
- infectious microorganism exist in reservoir
- 2.Invasion
- infectious agent can invade surrounding tissues
- developed mechanism to penetrate tissues and avoid host's non specific and specific defenses (inflammation and immunity)
- infectious agent can invade surrounding tissues
- 4. 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
- intact immune system - microorganism remains localized
- immune or inflammatory system compromised - infection may rapidly spread
- intact immune system - microorganism remains localized
- successful spread - relies on virulence factors
- others highly invasive - may enter lymphatics, blood, internal organs
- produce localized infections without spread to other regions of the body
- 1.Colonization
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