vector-borne transmission
Noun: * The transmission of a pathogen (an infectious agent like a virus, bacterium, or parasite) from one host to another through the bite or contact of a living intermediary organism, known as a vector. This is a form of indirect transmission, as the pathogen is not spread directly from person to person but requires the vector to carry it.
This term is used in medical, epidemiological, and public health contexts to describe a specific method of disease spread. It classifies how an infection is propagated within a population. * Malaria is a classic example of a disease caused by vector-borne transmission, where the *Plasmodium parasite is spread between humans by the bite of an infected Anopheles mosquito.* * Public health officials emphasized that controlling the mosquito population was crucial to interrupting the vector-borne transmission of the West Nile virus. * The study compared the efficiency of direct transmission versus vector-borne transmission for the new strain of the virus.
- "Mechanical vector-borne transmission": This occurs when the vector physically carries the pathogen on its body (e.g., legs, mouthparts) without the pathogen reproducing within the vector. The vector is simply a passive carrier.
- Houseflies can contribute to mechanical vector-borne transmission of cholera by carrying bacteria from feces to food.
- "Biological vector-borne transmission": This occurs when the pathogen undergoes part of its life cycle or multiplies within the vector before being transmitted. The vector is an essential host for the pathogen.
- In biological vector-borne transmission of Lyme disease, the Borrelia bacteria must develop inside the tick before the tick can infect a new host.
- Vector (n): The living organism (typically an arthropod like a mosquito, tick, flea, or louse) that transmits an infectious pathogen from one host to another.
- Vector-borne (adj): Describing a disease or infection that is transmitted by a vector.
- Dengue fever is a major vector-borne illness in tropical regions.
- Transmission (n): The act or process of spreading something, especially an infection or disease, from one person, organism, or place to another.
- Indirect transmission (via a vector)
- Vehicle-borne transmission (when "vehicle" is defined as a living intermediary; note: "vehicle" more commonly refers to non-living objects like water or food)
- Zoonotic transmission: Transmission of a disease from animals to humans, which can occur via vectors (making it a vector-borne zoonosis).
- Horizontal transmission: Transmission of a pathogen between individuals of the same generation, which includes vector-borne routes.
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indirect transmission of an infectious agent that occurs when a vector bites or touches a person
