What body system does West Nile virus affect? West Nile virus (WNV) is a potentially serious illness that can attack the nervous system of animals and humans. The virus interferes with normal central nervous system functioning and causes inflammation of brain tissue.
Does West Nile affect the respiratory system? Severe autonomic dysfunctions may contribute to respiratory insufficiency and cardiac arrhythmias. Respiratory insufficiency is recognized to have a poor-prognosis in human with West Nile neurological disease WNND .
Does West Nile virus target the nervous system? Following a systemic infection, WNV crosses the blood-brain barrier (BBB) after a brief viremia and ultimately invades the CNS 28. The development of WNV encephalitis is correlated with the ability of the virus to gain access to the CNS (neuroinvasiveness).
Is West Nile virus a systemic infection? An estimated 70-80% of human WNV infections are subclinical or asymptomatic. Most symptomatic persons experience an acute systemic febrile illness that often includes headache, weakness, myalgia, or arthralgia; gastrointestinal symptoms and a transient maculopapular rash also are commonly reported.
What body system does West Nile virus affect? – Related Questions
Does West Nile virus weaken immune system?
West Nile virus evades the body’s immune defenses by blocking immune signaling by a protein receptor, a finding that could pave the way for a vaccine to protect against North American strains of the virus, UT Southwestern Medical Center researchers report.
What are the long term effects of West Nile virus?
The most common long-term effects are depression, tremors, fatigue, memory problems, extremity weakness, word-finding difficulty and headaches. Since WNV arrived in North America in 1999, it has become the most common arboviral infection in the continent.
Does West Nile virus stay in your body?
Can people have persistent infection with West Nile virus? The findings of this study suggest that, in some people, West Nile virus may persist in the kidneys. There have been a few reports of persistent West Nile virus found in brain, spinal fluid, and blood of people who were immunocompromised.
Does West Nile cause nerve damage?
West Nile virus (WNV) is a mosquito-borne virus that can cause severe neurological disease in those infected. Those surviving infection often present with long-lasting neurological changes that can severely impede their lives. The most common reported symptoms are depression, memory loss, and motor dysfunction.
How does the West Nile virus spread?
West Nile virus is most commonly spread to people by the bite of an infected mosquito. Mosquitoes become infected when they feed on infected birds. Infected mosquitoes then spread West Nile virus to people and other animals by biting them.
How do you treat West Nile virus?
There is no specific treatment for West Nile virus (WNV) disease; clinical management is supportive. Patients with severe meningeal symptoms often require pain control for headaches and antiemetic therapy and rehydration for associated nausea and vomiting.
How do they test for West Nile in humans?
A diagnosis of West Nile virus can be confirmed using blood tests. Someone who is infected with West Nile virus will have an increased level of antibodies against the disease. Antibodies are proteins produced by the immune system that attack foreign substances such as viruses, bacteria and other harmful organisms.
What are the symptoms of the West Nile virus in humans?
Symptoms of severe illness include high fever, headache, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness, vision loss, numbness and paralysis.
What does West Nile rash look like?
The rash of WNV is similar to many other viral rashes in that it can be nonspecific in nature. WNV rash typically consists of small pink spots – some raised and some flat – symmetrically distributed on the arms, legs, and trunk. It has been described as looking very much like roseola or measles.
Can you get West Nile twice?
Can a human get West Nile virus twice? Medical professionals don’t believe so. Like many other viruses, medical tests indicate that once a person has been infected with West Nile, he/she develops a natural immunity to future infection by the virus for life.
How do you test for West Nile virus?
WNV Antibody Testing
Laboratory diagnosis is generally accomplished by testing of serum or cerebrospinal fluid (CSF) to detect WNV-specific IgM antibodies. Immunoassays for WNV-specific IgM are available commercially and through state public health laboratories.
Is the West Nile virus contagious?
The West Nile virus is not contagious. It cannot be transmitted from person to person. A person cannot get the virus, for example, from touching or kissing a person who has the disease or from a health-care worker who has treated someone with the disease.
Can West Nile virus symptoms recur?
Summary: Most people who suffer severe infection with West Nile virus still experience symptoms years after infection and many may continue to experience these symptoms for the rest of their lives according to new research.
Is West Nile disease curable?
Because it’s a viral condition, West Nile virus doesn’t have a cure. But you can take over-the-counter pain relievers, such as ibuprofen or aspirin, to relieve symptoms of West Nile virus such as muscle aches and headaches.
Does West Nile make you tired?
A year after their infection, the West Nile patients commonly reported fatigue, memory problems, weakness, headache, joint pain, and balance problems. Half reported poor physical health. Nearly one in four reported depression.
Does West Nile virus cause brain damage?
Experts who work on the mosquito-borne West Nile virus have long known that it can cause serious neurological symptoms, such as memory problems and tremors, when it invades the brain and spinal cord.
Is there a shot for West Nile virus?
There are no vaccines to prevent or medications to treat WNV in people. Fortunately, most people infected with WNV do not feel sick. About 1 in 5 people who are infected develop a fever and other symptoms.
How long does West Nile virus last?
Your body has to fight the infection on its own. In mild cases of West Nile, symptoms usually last for 3 to 6 days, and you can recover at home. If you get a more severe case of West Nile, symptoms can last for weeks or months, and you may need to stay in the hospital so you can get medicine to help you recover.
Where does the West Nile virus come from?
West Nile Virus (WNV) was first isolated in a woman in the West Nile district of Uganda in 1937. It was identified in birds (crows and columbiformes) in Nile delta region in 1953.
Can you get West Nile from swallowing a mosquito?
However, there is no evidence of human infection by consumption of properly cooked infected game. Hunters are likely at higher risk of infection by mosquito exposure, particularly in wetland environments.
Does West Nile virus cause elevated liver enzymes?
Background: West Nile virus neuroinvasive disease (WNND) occurs in less than 1% of infected people. Leukocytosis with lymphocytopenia, mild anaemia, throm- bocytopenia, elevated liver and muscle enzymes and hyponatremia are occasionally present in patients with WNND.