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Doctor insights on: How Often Does West Nile Fever Turn Into West Nile Encephalitis

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How often does west nile fever turn into west nile encephalitis?

How often does west nile fever turn into west nile encephalitis?

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. ...Read more

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Dr. Heidi Fowler
29 doctors shared insights

West Nile Encephalitis (Definition)

West Nile encephalitis is the more severe form of West Nile virus infection, which is spread by mosquitoes. The initial viral infection symptoms may range from having none at all to flu-like symptoms such as a fever and nausea as well as vomiting. West Nile encephalitis (brain inflammation) is potentially fatal, and results in symptoms of confusion, loss of consciousness, muscle weakness, ...Read more


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Does west nile encephalitis always kill you?

Not always: Many previously healthy people who acquire west nile encephalitis will recover. Those most likely to die are the elderly and those with compromised immune systems. ...Read more

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How does west nile virus spread?

How does west nile virus spread?

By Mosquitoe: West nile virus must be produced in high numbers before being passed through mosquitoes. Birds are far and away the most frequent carriers. Robins look like they might be responsible for spread all over the country. Mosquitoes have to feed on the infected robin and then pass the virus on to human beings through a bite. ...Read more

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How does the west nile virus get transmitted?

Mosquito bourne: West nile virus (wnv) is carried by mosquitoes that have fed on infected birds. They transmit the virus to humans when you are bitten. So stay indoors when mosquitoes are active, wear light colored clothes, long sleeves, hat, long pants, and consider using insect repellant as well. ...Read more

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How dangerous is the west nile virus?

How dangerous is the west nile virus?

West nile virus: This can be very dangerous as it causes a viral encephalitis. This can result in coma and death. ...Read more

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Can west nile virus cause encephalitis?

Can west nile virus cause encephalitis?

Yes: West nile virus is caused by an infection transmitted via a mosquito bite. Many people may be exposed to the virus but never develop symptoms. When symptoms do develop, it is typically fever and headache although more severe symptoms may occur. The cdc has info on west nile activity nationwide: http://www.Cdc.Gov/ncidod/dvbid/westnile/index.Htm. ...Read more

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Can humans catch west nile encephalitis?

Mosquito bites: West nile virus must be produced in high numbers before being passed through mosquitoes. Birds are far and away the most frequent carriers. Robins look like they might be responsible for spread all over the country. Mosquitoes have to feed on the infected robin and then pass the virus on to human beings through a bite. ...Read more

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What organ does the west nile virus affect?

What organ does the west nile virus affect?

Brain most commonly: The West Nile Virus mostly affects the brain within the central nervous system. When it affects the brain...it is the most common complication of West Nile....then, it's called an encephalitis. ...Read more

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How can you transmit the west nile virus?

How can you transmit the west nile virus?

West Nile virus: You can't transmit the virus. Only Mosquitos can transmit the virus. Use mosquito repellant and long sleeve clothing to avoid contracting the virus. Most people suffer no symptoms but some will develop fever, headache, body aches, lethargy, and encephalitis. ...Read more

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How deadly is West Nile virus untreated?

Only 1% have severe: sx. Most people don’t have sx’s w West Nile virus. Mild sx’s occur in about 20% of people; which can include fever, eye pain, generalized body aches, headaches, feeling really tired, & possible enlarged lymph nodes or rash. About 1% have severe illness which can include neurologic problems. Possible sx’s include: seizures, severe headache w stiffness of neck, high fever, confusion & weakness. ...Read more

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How is the west nile virus transmitted?

How is the west nile virus transmitted?

West Nile Virus: Typically, west nile virus spreads to humans via infected mosquitoes. Mosquitoes become infected when they feed on infected birds. You can not get infected by touching or kissing a person with the virus. In some cases, the virus may be spread by organ transplantation and blood transfusions. ...Read more

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What does west nile virus look like?

Very variable: In most cases, no actual symptoms, and in those who do get sick, very similar to a flu-like problem with generalized aching, low grade temp. Far less common, especially in immunologically suppressed folks, can cause brain and spinal cord inflammation which could be deadly, or leave a patient with arm or leg weakness (like a poliomyelitis). ...Read more

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Can west nile virus be fatal?

Can west nile virus be fatal?

Yes: It's more dangerous for the young and old with weaker immune systems, and it's not common, but it is certainly possible. ...Read more

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How come the west nile virus and malaria are contracted by mosquitos but the aids virus isn't?

How come the west nile virus and malaria are contracted by mosquitos but the aids virus isn't?

Agree w earlier: responses. HIV can only be transmitted between humans. The virus would be unable to remain alive in a mosquito. Even if it could, mosquitoes don't inject blood into people. ...Read more

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What is recovery rate from West Nile virus causing encephalitis?

What is recovery rate from West Nile virus causing encephalitis?

Variable: A case of West Nile virus with encephalitis recover but takes long time , prolonged recuperation and need rehabilitation for a long time . They may have some memory loss or weakness of limbs ...Read more

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How soon after bein infected by mosquito with chincincuya or West Nile virus do symptoms begin?

How soon after bein infected by mosquito with chincincuya or West Nile virus do symptoms begin?

These are easy.: ANSWER: 3-14 days so say the books. (most of my patients have landed in the 7-12 day range) Come on now....give me a real toughie next time around....something I can't just look up on the internet! LOL. ...Read more

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How likely will west nile virus cause brain damage?

< 1 in 150: Nobody really knows now common the infection is. But the cdc estimates that about 1 person in 150 who gets the virus will get bad encephalitis, more likely if you're over 50 or immunocompromised, less if you're not. There is not always evident permanent damage even after severe encephalitis. ...Read more

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What does the west nile virus rash look like?

What does the west nile virus rash look like?

West Nile Virus: About 20% of people who are infected w west nile virus may develop a rash. The rash is variable ; may be maculopapular or macular. Most people don’t have sx’s w west nile virus. An article entitled “characteristics of the rash associated with west nile virus fever” indicated that 33% of people w a rash had pruritus. ...Read more

Dr. Amandeep Kaur
180 doctors shared insights

Encephalitis (Definition)

The encephalon is considered to be the gray matter of the brain. This is where all the neuron cells are located. If an infection sets in to this region it is called an encephalitis. The -itis ending just means inflammation. It is usually virus infections that like to go specifically to the ...Read more


West Nile Virus (Definition)

West Nile Virus is a mosquito borne infection that originated in the tropics. It causes a flu-like syndrome in 20% of those infected . It ...Read more