<unk>  encephalitis virus is usually transmitted via mosquitos to the human host.<unk>  encephalitis virus contains positive-sense viral RNA; this RNA has its genome directly utilized as if it were mRNA, producing a single protein which is modified by host and viral proteins to form the various proteins needed for replication. Transmission to humans requires mosquito species capable of creating a "bridge" between infected animals and uninfected humans; this occurs when humans become part of the enzootic cycle. The incubation period is 5-15 days. Humans are dead-end hosts for the virus, meaning there is an insufficient amount of<unk>  encephalitis virus in the blood stream to infect a mosquito; there is also no evidence of person to person spread.
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