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What are common vector-borne diseases, and how do they commonly spread among vertebrate...
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High School Teacher
Vector borne diseases are illnesses caused by an infectious microbe that is transmitted to vertebrates by another animal, usually an arthropod. This second animal is called a vector for the disease. There are a large number of viral, bacterial and parasitic diseases that can be transmitted by insect vectors. The most common vectors are: blood sucking insects such as mosquitoes, fleas, lice, biting flies, bugs, lice, helminthes and ticks.
Most common vector borne diseases affecting people and their vectors are: malaria -anopheles mosquitoes, dengue and chikungunya- aedis mosquitoes, Leishmaniasis - sandflies, trypanosomiasis - flies and bugs, West Nile disease – mosquitoes, filariasis - mosquitoes, encephalitis - mosquitoes and ticks, yellow fever - mosquito, plague - flies, lyme disease - ticks etc.
Vector borne diseases often cause serious illnesses to other vertebrates like livestock. Lyme and bluetongue (spread by mosquitoes and ticks) are examples of devastating vector borne diseases that create havoc among the livestock population worldwide.
"Vectors typically become infected by a disease agent while feeding on infected vertebrates (like birds, rodents, other larger animals, or humans)." The disease agent usually completes a part of their lifecycle (and multiply) inside the host, and then get transmitted to a susceptible person or other animal through the salivary glands of the vector when it bites another vertebrate.
Posted by mathewww on January 31, 2014 at 1:21 AM (Answer #1)
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