West nile virus Incubation period is usually between 2 to 15 days Mosquitoes which are the prime vector, with birds being the most commonly infected animal and serving as the prime reser voir host. Also found in found in various species of ticks, mamm reptiles, and amphibians Not all susceptible hosts develop sufficient levels to trans mit the disease to uninfected mosquitos 80% of West nile virus infections in humans are subclinical causing no symp toms Most common symptom is the west nile fever but 1% of the cases result in neurological disease, such as west nile enc cephalitis Similar symptoms to other viral encephalitis with fever, hea daches, and altered mental status. however, there is also m muscular d weakness(30-50%), with lower motor neuron symptoms, flacciWest Nile Virus Incubation period is usually between 2 to 15 days Mosquitoes which are the prime vector, with birds being the most commonly infected animal and serving as the prime reser voir host. Also found in found in various species of ticks, mamm als, reptiles, and amphibians Not all susceptible hosts develop sufficient levels to trans mit the disease to uninfected mosquitos 80% of West Nile virus infections in humans are subclinical, causing no symptoms Most common symptom is the west nile fever, but 1% of the cases result in neurological disease, such as west nile enc ephalitis Similar symptoms to other viral encephalitis with fever, hea daches, and altered mental status, however, there is also m uscular weakness (30-50%), with lower motor neuron symptoms, flacci d • • • • • •