5 doctors weighed in:
How often does west nile fever turn into west nile encephalitis?
5 doctors weighed in

1 doctor agrees
In brief: Actually uncommon
Most west nile infections are asymptomatic.
Some cause mild flu-like symptoms. Full blown infection of brain is rather uncommon in the normal patient and more often seen with immuno-suppression, such as prior transplants, HIV pts, cancer chemotherapy. The polio-myelitis form is even rarer.

In brief: Actually uncommon
Most west nile infections are asymptomatic.
Some cause mild flu-like symptoms. Full blown infection of brain is rather uncommon in the normal patient and more often seen with immuno-suppression, such as prior transplants, HIV pts, cancer chemotherapy. The polio-myelitis form is even rarer.
Dr. Bennett Machanic
Dr. Bennett Machanic
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Dr. William Singer
Pediatrics - Neurology
1 doctor agrees
In brief: West Nile Virus
West nile virus travels through an insect vector. The virus will undergoe a viremia state during which it is spread to organs throughout the body, including the brain.

In brief: West Nile Virus
West nile virus travels through an insect vector. The virus will undergoe a viremia state during which it is spread to organs throughout the body, including the brain.
Dr. William Singer
Dr. William Singer
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Emily Lu
Family Medicine
1 doctor agrees
In brief: 1 in 150
Only 1 in 150 patients infected with the west nile virus develop encephalitis.
West nile fever is much more common and is typically a self-limited disease. Individuals more susceptible to developing encephalitis from a west nile infection include the elderly, alcoholics and diabetics.

In brief: 1 in 150
Only 1 in 150 patients infected with the west nile virus develop encephalitis.
West nile fever is much more common and is typically a self-limited disease. Individuals more susceptible to developing encephalitis from a west nile infection include the elderly, alcoholics and diabetics.
Emily Lu
Emily Lu
Answer assisted by Emily Lu, Medical Student
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