Japanese encephalitis pathophysiology: Difference between revisions
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==Pathophysiology== | ==Pathophysiology== | ||
===Transmission=== | ===Transmission=== | ||
Japanese encephalitis (JE) [[virus]] is a [[flavivirus]] which is [[antigen]]ically related to | Japanese encephalitis (JE) [[virus]] is a [[flavivirus]] which is [[antigen]]ically related to St. Louis encephalitis virus. | ||
[[Image:Culex-laying-eggs.jpg|left|thumb|Culex mosquito laying eggs. (Photograph by Richard G. Weber)]] | [[Image:Culex-laying-eggs.jpg|left|thumb|Culex mosquito laying eggs. (Photograph by Richard G. Weber)]] | ||
* By rice field, breeding mosquitoes (primarily Mosquito-borne Culex tritaeniorhynchus group) become infected with Japanese encephalitis virus | * By rice field, breeding mosquitoes (primarily Mosquito-borne Culex tritaeniorhynchus group) become infected with Japanese encephalitis virus. | ||
* Mosquitoes become infected by feeding on domestic pigs and wild birds infected with the Japanese encephalitis virus. Infected mosquitoes then transmit the Japanese encephalitis virus to humans and animals during the feeding process. | * Mosquitoes become infected by feeding on domestic pigs and wild birds infected with the Japanese encephalitis virus. Infected mosquitoes then [[transmission|transmit]] the Japanese encephalitis virus to humans and animals during the feeding process. | ||
* The Japanese encephalitis virus is amplified in the blood systems of domestic pigs and wild birds. | * The Japanese encephalitis virus is amplified in the blood systems of domestic pigs and wild birds. | ||
* Japanese encephalitis virus is NOT transmitted from person-to-person. For example, | * Japanese encephalitis virus is NOT transmitted from person-to-person. For example, one cannot get the virus from touching or kissing a person who has the disease, or from a health care worker who has treated someone with the [[disease]]. | ||
* Only domestic pigs and wild birds are carriers of the Japanese encephalitis virus. | * Only domestic pigs and wild birds are carriers of the Japanese encephalitis virus. | ||
Japanese encephalitis | Japanese encephalitis [[outbreak]]s are usually circumscribed and do not cover large areas. They usually do not last more than a couple of months, dying out after the majority of the pig amplifying hosts have become infected. | ||
==References== | ==References== |
Revision as of 19:32, 27 December 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Pathophysiology
Transmission
Japanese encephalitis (JE) virus is a flavivirus which is antigenically related to St. Louis encephalitis virus.
- By rice field, breeding mosquitoes (primarily Mosquito-borne Culex tritaeniorhynchus group) become infected with Japanese encephalitis virus.
- Mosquitoes become infected by feeding on domestic pigs and wild birds infected with the Japanese encephalitis virus. Infected mosquitoes then transmit the Japanese encephalitis virus to humans and animals during the feeding process.
- The Japanese encephalitis virus is amplified in the blood systems of domestic pigs and wild birds.
- Japanese encephalitis virus is NOT transmitted from person-to-person. For example, one cannot get the virus from touching or kissing a person who has the disease, or from a health care worker who has treated someone with the disease.
- Only domestic pigs and wild birds are carriers of the Japanese encephalitis virus.
Japanese encephalitis outbreaks are usually circumscribed and do not cover large areas. They usually do not last more than a couple of months, dying out after the majority of the pig amplifying hosts have become infected.