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New page: An infection occurs when a parasitic organism colonizes a host organism and gains nourishment from the host.<ref>http://www.medterms.com/script/main/art.asp?articlekey=129...
An infection occurs when a [[parasite|parasitic]] [[organism]] colonizes a host organism and gains nourishment from the host.<ref>http://www.medterms.com/script/main/art.asp?articlekey=12923</ref>
The term is most often used in reference to a [[bacteria|bacterial]] infection, where a harmful opportunistic bacteria begins to grow in or on some part of an organism's body.
The term is also used in reference to viral infections, even though [[virus|viruses]] are not "organisms" in the strictest sense of the word.
There are examples of bacteria growing in [[mutualism|mutualistic]] rather than parasitic fashion. The digestive systems of most organisms, including humans, depend on the presence of beneficial bacteria in order to properly digest food, especially plant matter.
==References==
<references/>
The term is most often used in reference to a [[bacteria|bacterial]] infection, where a harmful opportunistic bacteria begins to grow in or on some part of an organism's body.
The term is also used in reference to viral infections, even though [[virus|viruses]] are not "organisms" in the strictest sense of the word.
There are examples of bacteria growing in [[mutualism|mutualistic]] rather than parasitic fashion. The digestive systems of most organisms, including humans, depend on the presence of beneficial bacteria in order to properly digest food, especially plant matter.
==References==
<references/>