Difference between revisions of "Host invasion by microorganisms"
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===Introduction=== | ===Introduction=== | ||
One of the main causes of disease is infection by microorganisms, with four types so far identified: | One of the main causes of disease is infection by microorganisms, with four types so far identified: | ||
| − | * | + | *Viruses |
| − | * | + | *Bacteria |
| − | * | + | *Fungi |
| − | * | + | *Parasites- comprising protozoa and helminths |
| − | |||
| − | |||
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 | ||
| − | + | ===[[:Category:Viruses|Viruses]]=== | |
| − | | | + | |
| − | + | ===[[:Category:Bacteria|Bacteria]]=== | |
| + | |||
| + | ===[[:Category:Parasites|Parasites]]=== | ||
| + | |||
| + | ===[[:Category:Fungi|Fungi]]=== | ||
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| + | ==[[Host Invasion by Microorganisms Flashcards|Host Invasion Flashcards]]== | ||
===References=== | ===References=== | ||
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*http://www.cellsalive.com | *http://www.cellsalive.com | ||
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Revision as of 12:53, 13 August 2010
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This article has been peer reviewed but is awaiting expert review. If you would like to help with this, please see more information about expert reviewing. |
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Introduction
One of the main causes of disease is infection by microorganisms, with four types so far identified:
- Viruses
- Bacteria
- Fungi
- Parasites- comprising protozoa and helminths
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
Viruses
Bacteria
Parasites
Fungi
Host Invasion Flashcards
References
- Murphy, K., Travers, P. and Walport, M. (2008) Janeway's Immunobiology. 7th ed. New York: Garland Science Publishing.