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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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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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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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Encephalitis from west nile virus. What is death rate/cute rate? What treatments are available

Encephalitis from west nile virus. What is death rate/cute rate? What treatments are available

Hard to say: Some studies have quoted mortality from neuroinvasive cases of wnv ~5%, but this must be a huge overestimate. Maybe 3 in 1000 of all cases are severe (or neuroinvasive), so you might guess less than 1 in 5000 cases die. Most of the deaths appear to come in the elderly, chronically ill or immunosuppressed. Treatment is mainly supportive (including intubation & ventilation in severe cases). ...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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How do I know if I have west nile fever?

Most no symptoms.: 80% of people infected have no symptoms. If you develop symptoms of severe west nile virus illness, such as unusually severe headaches or confusion, seek medical attention immediately, according to the cdc. Severe illness usually requires hospitalization. Milder cases improve on their own and do not necessarily require medical attention. ...Read more

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Is the west nile fever found all over the usa?

The Robin: 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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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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What does a rash from west nile fever look like?

What does a rash from west nile fever look like?

West Nile Virus: The rash seen with West Nile Virus Fever tends to be a non-specific maculopapular rash that appears between days 5 to 12 of acute illness. ...Read more

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What are good preventive measures for west nile fever?

What are good preventive measures for west nile fever?

Avoid mosquitoes: Mosquito safety- use bed netting when sleeping. Spray the walls of the home with insecticide. Wear long pants & long sleeved shirts from dusk to dawn. Use Permethrin spray on clothing and mosquito netting. Deet agents can be used on skin. ...Read more

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What are the tests for west nile encephalitis?

What are the tests for west nile encephalitis?

West Nile : West nile infection is confirmed by testing blood or cerebral spinal fluid for an IgM antibody specific to the virus. It is recommended that all cases with a positive test result be confirmed by testing at the center for disease control or by the state health department. ...Read more

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Is west nile encephalitis transmitted from person to person?

NO, except....: The virus is vector-borne through mosquitoes. However, in a special case featured several years ago in the new england journal of medicine, an article described a case where recipients of organs harvested from a west nile virus-infected donor, became ill with west nile virus. ...Read more

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What are the symptoms associated with west nile encephalitis?

What are the symptoms associated with west nile encephalitis?

West nile disease: West nile encephalitis affects about 1 in 150 people who are infected with the virus. It may manifest with fever, stiff neck, headache, confusion, stupor, coma, tremors, seizure, weakness and possibly paralysis. ...Read more

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What are the risk factors for catching west nile encephalitis?

Mosquito bite: West nile occurs in epidemics, usually during summer, and seems to afflict humans and horses most often. Carried by mosquitoes and these bites infect the victim. ...Read more

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Do I have the west nile virus? I have fever at night, cough, mucus and sore throat and just came back from vacation in arizona.

No way to know: More likely that you may have "desert fever" (coccidiodomycosis), but this is purely speculative. Suggest you see a doctor unless you are better in the next several days. West nile is conceivable, but very unlikely. ...Read more

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I have a serious flu like cold can this be West Nile virus?

West Nile Signs: It could be as the signs and symptoms can be similar. The questions is more about where you live, your recent activities and any evidence of bites. Armed with this initial information, I recommend contacting a physician to further evaluate you as rapid treatment can prevent long term complications. ...Read more

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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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Dr. Amandeep Kaur
179 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