Communicable Diseases
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.
Communicable diseases may be transmitted (spread) in the
following ways:
-
By one
infected person to another
-
From an
animal to a human
-
From some
inanimate object (doorknobs, table tops, etc.) to an individual
Some communicable diseases can be spread in more than one
way.
Last Revised: February 03, 2012
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