Reference Terms
from Wikipedia, the free encyclopedia

Infectious disease

In medicine, infectious disease or communicable disease is disease caused by a biological agent such as by a virus, bacterium or parasite.

This is contrasted to physical causes, such as burns or chemical ones such as through intoxication.

Note:   The above text is excerpted from the Wikipedia article "Infectious disease", which has been released under the GNU Free Documentation License.
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May 3, 2015

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updated 12:56 pm ET