West Nile Virus in South Carolina
West Nile Virus is showing early 2026 season activity across multiple states before the typical transmission season begins. Positive mosquito pools have been confirmed in Texas (San Antonio, Frisco), Louisiana (New Orleans), and six California counties. Human cases have already been confirmed in Colorado. Peak transmission season runs July through September — and an above-average season is projected for 2026. Most infections are mild or asymptomatic, but about 1 in 150 infected people develop severe, potentially fatal brain inflammation.
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Qu'est-ce que West Nile Virus?
West Nile Virus arrived in the U.S. in 1999 and has since become the leading mosquito-borne disease in the country. It's transmitted by Culex mosquitoes that bite infected birds. While 80% of infected people have no symptoms, severe cases can cause encephalitis or meningitis with long-term neurological effects. Age over 60 significantly increases risk of severe disease.
SymptĂ´mes
- Mild (West Nile fever): Fever, headache, body aches, joint pain, vomiting, diarrhea, rash
- Severe: High fever, severe headache, stiff neck, disorientation, tremors, seizures
- Neurological: Muscle weakness, vision loss, paralysis, coma
- Long-term effects: Fatigue, memory problems, muscle weakness (can persist months/years)
Transmission
Transmitted through bites of infected Culex mosquitoes. Rarely through blood transfusion, organ transplant, mother to fetus, or breastfeeding. NOT spread person-to-person through casual contact.
Période de Contagiosité : Not contagious person-to-person; can be in blood of infected person during illness
Prévention
- Use EPA-registered insect repellents (DEET, picaridin, IR3535, oil of lemon eucalyptus)
- Wear long sleeves and pants at dawn/dusk when mosquitoes most active
- Install/repair window and door screens
- Use air conditioning when possible
- Eliminate standing water (buckets, flower pots, bird baths, gutters)
- Change water in pet bowls, birdbaths weekly
- Treat or drain swimming pools, fountains
- Community mosquito control programs (spraying, larvicides)
- Avoid outdoor activities at dawn/dusk during peak season
South Carolina Ressources Santé
Informations du département de santé local et directives de prévention spécifiques à l'état
Nous Surveillons South Carolina
Notre surveillance alimentée par IA surveille en continu l'activité de West Nile Virus dans tout South Carolina. Nous suivons les données des services de santé des états, des hôpitaux locaux, des rapports du CDC et de plus de 50 sources de santé mondiales pour fournir une alerte précoce sur les menaces émergentes.
Recevez des notifications instantanées lorsque l'activité de West Nile Virus augmente dans South Carolina ou dans votre comté spécifique.
South Carolina Département de Santé
Pour les alertes officielles de santé de l'état, les lieux de vaccination et les directives de santé publique spécifiques à South Carolina, visitez le site web du département de santé de votre état.
Understanding West Nile Virus: Key Questions
Que vous viviez dans South Carolina or are traveling there, knowing the symptoms, timeline, and when to seek care helps you act quickly if exposure occurs.
Quand Consulter un MĂ©decin
Seek care if you experience severe dehydration, bloody stools, high fever, or symptoms lasting more than 3 days. Children under 5, adults over 65, and immunocompromised individuals should seek care earlier.
SymptĂ´mes d'urgence : Severe dehydration, inability to keep fluids down for 12 or more hours, or neurological symptoms require emergency care.
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Ressources Expertes et Références
Informations fiables provenant des principales organisations de santé
CDC
Directives officielles des Centers for Disease Control and Prevention des États-Unis
Voir les Ressources du CDC →WHO
Surveillance mondiale des maladies et directives de l'Organisation Mondiale de la Santé
Voir les Ressources de l'OMS →Contenu Révisé Médicalement
Les informations sur les maladies sur Virus Watcher sont révisées par notre Épidémiologiste en Chef, ancien analyste principal du CDC pour les prévisions FluSight. Les données épidémiques sont agrégées à partir de sources vérifiées notamment BEACON, ProMED, OMS, CDC et plus de 50 agences nationales de santé. Ces informations sont à des fins éducatives et ne doivent pas remplacer les conseils médicaux professionnels.
Dernière révision : 2026-08-13
Recent West Nile Virus Reports
No confirmed cases reported in South Carolina yet. Here are the latest West Nile Virus reports from our global surveillance network.
Greece and Italy are reporting the highest West Nile virus activity in Europe this season. The spread of West Nile virus -- a mosquito-borne disease transmitted primarily by infected mosquitoes -- in Greece is showing an upward trend, according to the National Public Health Orga…
Holidaymakers heading to Spain have been warned to take precautions after the country's first death this year from a virus - with experts fearing the disease could spread to more hotspots. An 82-year-old man from Dos Hermanas, near Seville, has become Spain's first confirmed fat…
West Nile virus is most commonly spread through mosquitoes and symptoms can range from non-existent to severe.Getty Summer isn't over yet -- and neither is mosquito season, which means you still have a very real chance of catching West Nile virus. In fact, every year, cases of t…
More than 240 cases of West Nile virus infection have been reported in Europe since the start of the season. Italy has been particularly hard hit. The WHO has called for increased vigilance. As of last Wednesday, a total of 241 cases had been reported in seven European countries…
The World Health Organisation has issued a warning over a fast-growing outbreak Brits heading to some of Europe's most popular sunshine hotspots this summer are being urged to take extra care, after health chiefs warned a fast-growing West Nile virus outbreak is spreading across…
Mosquitoes carrying deadly West Nile virus have been detected in the Spanish regions of Fuengirola and Mijas - both of which are visited by thousands of Brits each year Two popular Spanish holiday hotspots are on red alert after several people were struck down by the potentially…
California has recorded its first West Nile virus death of 2026 after a Kings County resident died from the mosquito-borne illness, health officials announced Monday. The death comes weeks after Kings County confirmed its first human case of the 2026 season, according to KGPW. …
AUSTIN (KXAN) -- A mosquito trap in Buda has tested positive for West Nile virus, according to the Hays County Development Services Mosquito Surveillance Program. The positive sample was collected in the 78610 ZIP code and marks the fifth West Nile virus-positive mosquito pool i…
Questions Fréquemment Posées
Questions fréquentes sur West Nile Virus répondues par notre équipe d'épidémiologie
Maladies Associées
Suivez d'autres maladies aux symptĂ´mes ou modes de transmission similaires
Obtenez West Nile Virus Alertes pour South Carolina
Recevez des notifications instantanées lorsque l'activité de West Nile Virus augmente dans South Carolina ou vos destinations de voyage. Suivez plus de 200 maladies avec des alertes géolocalisées. Utilisé par les systèmes de santé, les services médicaux d'urgence, les écoles et les voyageurs du monde entier.
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