West Nile virus (West Nile encephalitis) is a brain infection caused by a virus. People become infected with the virus after they're bitten by a mosquito that has fed off of a bird that's infected with the West Nile virus. Symptoms in humans include fever, headache, rash, body ache, and swollen lymph nodes. Treatment for a West Nile virus infection involves supportive care. Read more: West Nile Virus Article
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Treatment & Diagnosis
- Fatigue, Tiredness, and Lethargy
- Memory Loss
- Swollen Lymph Nodes (Lymphadenopathy)
- Doctor: Checklist to Take To Your Doctor's Appointment
- How to Choose a Doctor
- West Nile Virus
- Doctor: Getting the Most from Your Doctor's Appointment
- West Nile Virus and Insect Borne Diseases
Prevention & Wellness
- New, Natural Pesticides Effective Against Mosquitoes: Study
- Zika, West Nile Cases Reported in Alabama
- Health Tip: Understanding West Nile Virus
- Thirsty Mosquitoes May Bite More in Droughts
- U.S. Illnesses Tied to Ticks, Mosquitoes Are Soaring
- West Nile Virus May Pose Zika-Like Threat to Fetus
- West Nile's Long-Term Bite: Impact on Brain May Last Years
- Some U.S. Olympians Got West Nile in Brazil, But Not Zika
- Harvey's Floodwaters Harbor Many Health Hazards
- Not All Mosquitoes Need Standing Water to Breed: Study
- New Technology Makes Gene Mapping Cheaper, Faster: Study
- Drought May Beckon Bigger West Nile Outbreaks
- Lab Vaccine Shields Mice Against Zika Virus
- U.S. Death Toll From Infectious Diseases Unchanged: Study
- West Nile's Long-Term Death Toll May Be Higher Than Thought
- DNA-Based Vaccine Guards Against Zika in Monkey Study
- When It Comes to West Nile, Robins Do It, Cardinals Don't
- Latin America Zika Outbreak Should 'Burn Out' Within 3 Years, Scientists Say
- Study Suggests Aerial Pesticide Spraying Tied to Higher Autism Rates
- Zika Coming: Some of U.S. Lacks Mosquito Control
- Zika Virus: What You Should Know
- West Nile Virus Most Common Mosquito-Borne Illness in U.S.
- As Mosquito-Borne Illnesses Threaten U.S., Less Money Spent Fighting Them
- New System Targets Germs in Donated Blood Plasma
- EPA Unveils New Bug Repellant Labeling
- 1st Case of Locally Acquired Chikungunya Virus Reported in U.S.
- Guard Your Kids Against Bug Bites This Summer
- Mosquito-Borne Chikungunya Virus May Be Headed for U.S.
- Health Tip: Keep Mosquitoes at Bay
- West Nile Virus Has Cost U.S. Nearly $800 Million: CDC
- Texas Woman's Death Highlights Danger of Overlooking Dengue Fever
- 'Microparticles' Show Promise in Healing Damaged Hearts
- Scientists Seek to Take Bite Out of Mosquito Problem
- Asian Tiger Mosquito Could Spread U.S. Disease
- 2012 Texas West Nile Outbreak Linked to Mild Winter
- West Nile Spraying Safe in Short Term: Study
- Unusual Heat May Have Boosted West Nile Virus Last Year: CDC
- Survival of 'Obamacare' Tops List of Biggest Health News in 2012
- Immune System May Not Weaken With Age: Study
- Latest West Nile Tally: 5,245 Cases, 236 Deaths
- Worst-Ever West Nile Epidemic: What Happened?
- CDC: West Nile Toll Now 5,054 Cases, 228 Deaths
- West Nile Cases Pass 4,700 Mark Nationwide: CDC
- West Nile Cases Pass 4,500 Mark Nationwide: CDC
- West Nile Cases Continue to Climb, CDC Says
- West Nile Cases Continue to Climb, CDC Says
- West Nile Cases Rise by 400 Since Last Week: CDC
- West Nile Cases Still Rising; Death Toll Now at 134, CDC Says
- West Nile Up 35%, but CDC Says Peak Has Passed
- Health Tip: Protect Kids From Mosquito Bites
- West Nile Death, Paralysis Toll Climbs
- Beyond Statistics: 2 Faces of West Nile Virus
- Hurricane Isaac Could Stir Up Allergies, Asthma
- West Nile Virus Cases Continue to Climb
- West Nile Virus: Who's at Risk?
- West Nile Outbreak on Track to be Worst Ever
- New West Nile Threat: Kidney Disease
- Dallas Launches Insecticide Spraying Against West Nile Virus
- North Texas Cities to Start West Nile Spraying Thursday
- Dallas-Fort Worth Brace for West Nile Spraying
- West Nile Virus on the Rise in US: CDC
- West Nile Virus: Questions and Answers
- CDC Warns of Another Emerging Tick-Borne Threat
- Robins Are 'Super-Spreaders' of West Nile Virus, Expert Says
- West Nile Virus in 15 States
- Course of West Nile Infection Charted
- Researchers Find Genes That Influence West Nile Virus
- 117 West Nile Deaths in 2007
- Gene Protects Against HIV, But Ups Risk for West Nile Virus
- Mosquitos: How to Choose Use Insect Repellents Safely
- West Nile, Avoid Mosquito Bites to Avoid Infection
- Hurricane: Protection from Animal & Insect Related Hazards After a Natural Disaster
- Hurricane: After a Hurricane: Key Facts About Infectious Disease
- Are You a Mosquito Magnet?
- West Nile: Five Common Myths about West Nile Virus
- West Nile Virus: Test for Diagnosis
- Diseases from Animals: A Primer
- Diseases from Animals -- Why Now?
- Diseases From Animals -- What's Next?
- West Nile & Dialysis, a Medical Mystery
- Positive Living Series: Looking After Yourself
- West Nile, A Pregnancy Danger?
- Mosquitoes Not Impressed - Repellant No Good
- West Nile Virus Teleconference from CDC
Infectious Disease Resources
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