Communicable Disease Epidemiology
Communicable diseases, sometimes called infectious diseases, are illnesses caused
by organisms such as bacteria, viruses, fungi and parasites.
Sometimes the illness is not due to the organism itself, but rather a toxin
that the organism produces after it has been introduced into a human
host.
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Communicable diseases may be transmitted (spread) either by:
- one infected person to another,
- from an animal to a human, or
- from some inanimate object (doorknobs, table tops, etc.)
to an
individual.
Some communicable diseases can be spread in more than one way.
To
learn more about communicable diseases, select anyone of the links that
follow:
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Communicable
Disease Fact Sheets | Reportable
Diseases | Links
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Last Revised: April 23, 2008
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