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Kunstformen der Natur (1904) by Ernst Haeckel
Kunstformen der Natur (1904) by Ernst Haeckel

Pathogenicity is the ability of a pathogen to produce an infectious disease in an organism.

It is often used interchangeably with the term "virulence", although some authors prefer to reserve the latter term for descriptions of the relative degree of damage done by a pathogen. Virulence is the ability of an organism to invade the bloodstream.

The pathogencity of a pathogen is determined by the pathogen's ability to produce toxins, its ability to enter tissue and colonize and its ability to spread from host to host.

Unless indicated otherwise, the text in this article is either based on Wikipedia article "Pathogenicity" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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