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An infectious disease agent can be transmitted in two ways: as horizontal disease agent transmission from one individual to another in the same generation (peers in the same age group) [3] by either direct contact (licking, touching, biting), or indirect contact through air – cough or sneeze (vectors or fomites that allow the transmission of the agent causing the disease without physical ...
Infectious diseases capable of airborne transmission include many of considerable importance both in human and veterinary medicine. The relevant infectious agent may be viruses , bacteria , or fungi , and they may be spread through breathing, talking, coughing, sneezing, raising of dust, spraying of liquids, flushing toilets , or any activities ...
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] Fecal–oral transmission is primarily considered as an indirect contact route through contaminated food or water.
This clinic uses negative room pressure to prevent disease transmission. Most epidemics are caused by contagious diseases, with occasional exceptions, such as yellow fever. The spread of non-contagious communicable diseases is changed either very little or not at all by medical isolation of ill persons or medical quarantine for exposed persons ...
Pathogens include bacteria, fungi, protozoa, parasitic worms (helminths), and viruses. Each of these different types of organisms can then be further classified as a pathogen based on its mode of transmission. This includes the following: food borne, airborne, waterborne, blood-borne, and vector-borne.
Sexually transmitted diseases and infections (12 C, 75 P) W. Waterborne diseases (3 C, 41 P) Z. ... Pages in category "Infectious diseases by mode of transmission"
Horizontal transmission is the transmission of organisms between biotic and/or abiotic members of an ecosystem that are not in a parent-progeny relationship. Because the evolutionary fate of the agent is not tied to reproductive success of the host, horizontal transmission tends to evolve virulence .
Vector-borne transmission, transmitted by a vector, which is an organism that does not cause disease itself but that transmits infection by conveying pathogens from one host to another. [ 32 ] The relationship between virulence versus transmissibility is complex; with studies have shown that there were no clear relationship between the two.