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An infection is the detrimental colonization of a host organism by a foreign species. In infection, the infecting organism seeks to utilize the host's resources in order to multiply (usually at the expense of the host). The infecting organism, or pathogen, interferes with the normal functioning of the host and can lead to chronic wounds, gangrene, loss of an infected limb, and even death. The host's response to infection is inflammation. Colloquially, a pathogen is usually considered a microscopic organism though the definition is broader, including bacteria, parasites, fungi, viruses, prions, and viroids. A symbiosis between parasite and host, whereby the relationship is beneficial for the former but detrimental to the latter, is characterised as parasitism. The branch of medicine that focuses on infections and pathogens is infectious disease.

Colonization


Wound

infections. The difference between an infection and a colonization is often only a matter of circumstance. Organisms which are normally non-pathogenic can become pathogenic under the right conditions, and even the most virulent organism requires certain circumstances to cause a compromising infection. Some colonizing bacteria, such as Corynebacteria sp. and viridans streptococci, prevent the adhesion and colonization of pathogenic bacteria and thus have a symbiotic relationship with the host, preventing infection and speeding wound healing.

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RT @foxnews: HEALTH: Disappearing Bandage Fights Infections, Save Lives http://bit.ly/6gYATh
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RT @foxnews: HEALTH: Disappearing Bandage Fights Infections, Save Lives http://bit.ly/6gYATh
RT @healthtipsmedia Infections Caused by HIV, Causes of Infection, Treatment of HIV http://bit.ly/5eikqq
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RT @healthtipsmedia Infections Caused by HIV, Causes of Infection, Treatment of HIV http://bit.ly/5eikqq
Un vaccin contre les infections nosocomiales ? - http://t-pa.net/567914
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Un vaccin contre les infections nosocomiales ? - http://
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