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Description:This diagram illustrates the methods by which the arbovirus, La Crosse encephalitis virus (LACV) reproduces and amplifies itself in the avian populations, and is subsequently transmitted to dead end hosts including humans and other larger mammals predominantly by the Aedes species mosquitoes.
La Crosse encephalitis virus (LACV) is maintained in a cycle between Aedes triseriatus, the Eastern treehole mosquito, and vertebrate hosts, especially small mammals such as chipmunks and squirrels, in deciduous forest habitats, i.e., forests with trees that lose their leaves each year. Humans can become infected with LACV from the bite of an infected mosquito, however humans rarely, if ever, develop high enough concentrations of LACV in their bloodstreams to infect feeding mosquitoes. Humans are therefore considered "dead-end" or incidental hosts for LACV.
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Content Providers(s):CDC/ Dr. Thomas Monath
Creation Date:1976
Photo Credit:
Links:CDC - National Center for Emerging and Zoonotic Infectious Diseases (NCEZID); Division of Vector-Borne Diseases (DVBD); La Crosse Encephalitis
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.