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In the fecal-oral route, pathogens in fecal particles pass from one person to the mouth of another person. Although it is usually discussed as a route of transmission, it is actually a specification of the entry and exit portals of the pathogen, and can operate across several of the other routes of transmission. [18]
The natural route of invasion by Xcc is through the hydathodes, though leaf wounds caused by insects and plant roots may also be portals of entry. [1] Occasionally, infections occur through stomata. Hydathodes provide the pathogen a direct path from the leaf margins to the plant vascular system and thus systemic host infection.
This demonstrates how pathogens can pollute water. Although fecal–oral transmission is usually discussed as a route of transmission , it is actually a specification of the entry and exit portals of the pathogen, and can operate across several of the other routes of transmission. [ 1 ]
The following outline is provided as an overview of and topical guide to concepts related to infectious diseases in humans.. Infection – transmission, entry/invasion after evading/overcoming defense, establishment, and replication of disease-causing microscopic organisms (pathogens) inside a host organism, and the reaction of host tissues to them and to the toxins they produce.
Typical sites of virus entry into the body: The first steps of viral infection is determined by the site at which the virus implants into the body. This would subsequently dictate the mechanisms of viral pathogenesis. Transmission from a host with an infection to a second host; Entry of the virus into the body; Local replication in susceptible ...
Portal of entry: Mouth Mode of transmission: Ingestion of mature cyst through contaminated food or water Habitat: Colon and cecum Pathogenic stage: Trophozoite: Locomotive apparatus: Pseudopodia ("false foot”") Motility: Active, progressive and directional Nucleus 'Ring and dot' appearance: peripheral chromatin and central karyosome Mode of ...
Portals of entry are through blood and the respiratory system. The most common occurs via skin contact, yielding an ulceroglandular form of the disease. Inhalation of bacteria, [8] particularly biovar F. t. tularensis, [citation needed] leads to the potentially lethal pneumonic tularemia.
The pathogen that causes the disease may be exogenous (acquired from an external source; environmental, animal or other people, e.g. Influenza) or endogenous (from normal flora e.g. Candidiasis). [27] The site at which a microbe enters the body is referred to as the portal of entry. [28]