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Doctor insights on: Allergic Reaction To Insect Bite West Nile Virus Infection

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Insect Bites (Definition)

Insect bites are from mosquitos, spiders, flies, ticks, and other species that use their mandibles (jaws) to attach to a person or other animal. They can then suck blood out of their "prey" and leave saliva proteins that cause itching and swelling. Other insect species, like bees, yellow jackets, wasps, hornets and fire ants actually inject venom into their prey and can not only cause localized pain and swelling, but severe, acute allergic reactions in ...Read more


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What is the pathogenesis of the west nile virus infection?

What is the pathogenesis of the west nile virus infection?

Brain virus: The flavivirus is carried by mosquitoes, often mutants that bite both birds and people. It usually produces no symptoms, less often a mild fever, 1% of the time affects the brain, with the virus entering and multiplying in brain cells sometimes with lasting damage. Until there is a vaccine, avoiding mosquitoes is safest. ...Read more

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What are the tests for west nile virus infection?

What are the tests for west nile virus infection?

Several: Since the disease is usually asymptomatic and has no specific treatment, testing focuses on transmissibility person-to-person which is rare. Virus in the blood / spinal fluid by PCR proves infection. Igm anti-wnv suggests recent infection (up to a year), anti-wnv igg may take months to turn positive or be false-positive from dengue / immunization / other viruses. All blood is now screened. ...Read more

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What are the presenting symptoms of a west nile virus infection?

Many have none: May present with fever, fatigue, body aches, skin rash on the trunk, enlarged lymph nodes and generalized sense of not feeling well. In about one in 150 patients develop neurological findings of meningitis/encephalitis, and this can be potentially devastating. ...Read more

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Can you tell me how the way in which humans become infection with malaria and west nile virus differ?

Can you tell me how the way in which humans become infection with malaria and west nile virus differ?

Malaria vs WNV: West Nile Virus is found in temperate & tropical areas of the world. West Nile Virus has been detected in Culex, Anopheles, Culiseta, Deinocerites, Psorophora, Mansonia, Coquillettidia, Uranotaenia & Aedes mosquitoes. But the most common carriers are Culex & Aedes. Malaria is usually found in tropical & subtropical areas. There are about 3,500 species of mosquitoes. Only 30 to 40 species of ...Read more

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How can the way in which humans become infection with malaria and west nile virus differ?

How can the way in which humans become infection with malaria and west nile virus differ?

Malaria vs WNV: West Nile Virus is found in temperate & tropical areas of the world. West Nile Virus has been detected in Culex, Anopheles, Culiseta, Deinocerites, Psorophora, Mansonia, Coquillettidia, Uranotaenia & Aedes mosquitoes. But the most common carriers are Culex & Aedes. Malaria is usually found in tropical & subtropical areas. There are about 3,500 species of mosquitoes. Only 30 to 40 species of ...Read more

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Is this a West Nile virus rash? I got bit by mosquitoes while sleeping. See my profile picture. This is the only bite like that.

Is this a West Nile virus rash? I got bit by mosquitoes while sleeping. See my profile picture. This is the only bite like that.

Non-specific: A rash or local reaction from an insect bite is non-specific. This rash could be from any insect, including a mosquito. You can try to reduce the swelling with ice, and itch with an antihistamine (benadryl (diphenhydramine) or claritin) or topical steroid cream. If you start experiencing fever, chills, headache, body aches, this could be a sign of something more, and you should contact a Dr. immediately. ...Read more

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Which mosquito carries west nile virus? And how can I recognize it? I’ve heard only one kind of mosquito can actually give you west nile virus. Is there a way to tell if the mosquito that bit me is the “right” kind?

Which mosquito carries west nile virus? And how can I recognize it? I’ve heard only one kind of mosquito can actually give you west nile virus. Is there a way to tell if the mosquito that bit me is the “right” kind?

NO: There is no way to recognize a west nile virus mosquito from a non virus carrying mosquito. They all look same and bite same. I am sorry there is no way to tell the right kind.I know it isn't a big help at this time. May be in future we w'll have more information. Just please avoid all kinds of mosquitos. Thanks. ...Read more

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Where am I more likely to be bitten by a west nile virus infected mosquito?

Where am I more likely to be bitten by a west nile virus infected mosquito?

Unovered skin: Not covered skin is unprotected. Use hats, long sleeves, long pants, shirts covering back, glasses. Areas were mosquitos live and near ponds, lakes, sea. ...Read more

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Dr. Linda Callaghan
9 doctors shared insights

Infection (Definition)

Infections are invasions of some other organism (fungus, bacteria, parasite) or viruses into places where they do not belong. For instance, we have normal gut bacteria that live within us without causing problems; however, when those penetrate the bowel wall and enter the bloodstream, ...Read more


Dr. John Chiu
2,491 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more