Difference between revisions of "Host invasion by microorganisms"
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===Introduction=== | ===Introduction=== | ||
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*[[Parasites]]- comprising [[protozoa]] and [[helminths]] | *[[Parasites]]- comprising [[protozoa]] and [[helminths]] | ||
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All exist as either: | All exist as either: | ||
*Primary pathogens ('''obligate'''): presence always corresponds with disease | *Primary pathogens ('''obligate'''): presence always corresponds with disease | ||
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*'''Orofecal''':typically enteric infections | *'''Orofecal''':typically enteric infections | ||
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===References=== | ===References=== | ||
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*http://www.cellsalive.com | *http://www.cellsalive.com | ||
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[[Category:Immunology]] | [[Category:Immunology]] | ||
Revision as of 13:41, 18 August 2010
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Introduction
One of the main causes of disease is infection by microorganisms, with four types so far identified:
All exist as either:
- Primary pathogens (obligate): presence always corresponds with disease
- Secondary (opportunistic): prerequisites must be fulfilled before disease occurs
Microorganisms can enter the body by three routes:
- Contact: typically seen in dermatological infections
- Aerosol: typically respiratory infections
- Orofecal:typically enteric infections
Host Invasion Flashcards
References
- Murphy, K., Travers, P. and Walport, M. (2008) Janeway's Immunobiology. 7th ed. New York: Garland Science Publishing.