The entry of an infectious agent into the body can take place through the skin, following, for example, a cut, a bite, an open fracture, or a burn. However, it most often takes place through the mucous membranes, since they cover the digestive, respiratory and urogenital tracts.

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Keywords: agent, anatomy, bite, body, burn., color, cover, cut, digestive, entry, fracture, human, illustration, infection, infectious, membranes, mucous, open, overview, place, respiratory, site, skin, system, takes, tracts., urogenital