What is dengue fever and how serious is it?

Dengue is a viral infection transmitted by Aedes mosquitoes. Most people experience flu-like symptoms lasting 2-7 days. However, about 1 in 20 people develop severe dengue (previously called dengue hemorrhagic fever), which can cause internal bleeding, organ failure, and death if not treated promptly.

How does dengue spread?

Dengue spreads through bites from infected Aedes aegypti and Aedes albopictus mosquitoes. These mosquitoes bite primarily during the day, particularly in early morning and before dusk. Unlike malaria, dengue cannot spread directly from person to person - it requires mosquitoes as vectors.

What are the warning signs of severe dengue?

Warning signs typically appear 3-7 days after symptoms start and include severe abdominal pain, persistent vomiting, bleeding gums or nose, blood in vomit or stool, fatigue, restlessness, and rapid breathing. Severe dengue is a medical emergency requiring immediate hospitalization.

Can you get dengue more than once?

Yes, there are four dengue virus serotypes (DENV-1, DENV-2, DENV-3, DENV-4). Infection with one provides lifelong immunity to that serotype but only temporary partial immunity to the others. Subsequent infections with different serotypes increase the risk of developing severe dengue.

Is there a dengue vaccine?

Yes, dengue vaccines exist but have specific recommendations. Dengvaxia is approved for people aged 9-45 who live in endemic areas and have had a previous dengue infection. TAK-003 is approved in some countries. The vaccines are not recommended for people who have never had dengue due to increased risk of severe disease.

Where is dengue occurring now?

Dengue is endemic in over 100 countries in tropical and subtropical regions, including Southeast Asia, Latin America, Africa, and Pacific Islands. Climate change is expanding its range. Check the live outbreak data above for current dengue activity worldwide.

Nevada

Dengue Fever in Nevada

Dengue is a mosquito-borne viral infection that causes flu-like illness and can develop into severe dengue, a potentially lethal complication. It is endemic in more than 100 countries, primarily in tropical and subtropical regions. Track Dengue Fever activity and outbreaks specific to Nevada.

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Qu'est-ce que Dengue Fever?

Dengue fever is one of the fastest-growing mosquito-borne diseases globally. Approximately half of the world's population is now at risk, with an estimated 390 million infections occurring each year. Climate change is expanding the range of Aedes mosquitoes that transmit the disease, bringing dengue to new regions.

Symptômes

High fever (104°F/40°C)
Severe headache
Pain behind the eyes
Severe joint and muscle pain (breakbone fever)
Rash (appears 2-5 days after fever)
Nausea and vomiting
Mild bleeding (nose, gums)

Transmission

Dengue is transmitted through bites from infected Aedes aegypti and Aedes albopictus mosquitoes. These mosquitoes become infected when they bite a person with dengue virus in their blood. The virus cannot spread directly between people.

Période de Contagiosité : Not contagious person-to-person; infectious to mosquitoes from 1 day before fever onset through 5-7 days of illness

Prévention

Use mosquito repellent containing DEET, picaridin, or IR3535
Wear long-sleeved shirts and long pants
Use air conditioning or window/door screens
Remove standing water where mosquitoes breed
Use mosquito nets, especially during the day
Consider dengue vaccine if you live in endemic areas (consult healthcare provider)
Treat clothing and gear with permethrin

Nevada Ressources Santé

Informations du département de santé local et directives de prévention spécifiques à l'état

Nous Surveillons Nevada

Notre surveillance alimentée par IA surveille en continu l'activité de Dengue Fever dans tout Nevada. 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 Dengue Fever augmente dans Nevada ou dans votre comté spécifique.

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Nevada Département de Santé

Pour les alertes officielles de santé de l'état, les lieux de vaccination et les directives de santé publique spécifiques à Nevada, visitez le site web du département de santé de votre état.

→ Nevada Département de Santé → Trouver Dengue Fever Vaccination Près de Chez Vous → Avis de Santé Voyage du CDC

Se Protéger dans Nevada

Que vous viviez dans Nevada, que vous y voyagiez ou que vous ayez de la famille dans cet état, comprendre la Dengue Fever prévention est essentielle. Suivez ces mesures de prévention fondées sur des données probantes :

Mesures de Prévention

Use mosquito repellent containing DEET, picaridin, or IR3535
Wear long-sleeved shirts and long pants
Use air conditioning or window/door screens
Remove standing water where mosquitoes breed
Use mosquito nets, especially during the day
Consider dengue vaccine if you live in endemic areas (consult healthcare provider)
Treat clothing and gear with permethrin

Quand Consulter un Médecin

Si vous présentez des symptômes de Dengue Fever dans Nevada, contactez immédiatement votre médecin. Un diagnostic et un traitement précoces améliorent considérablement les résultats.

Symptômes d'urgence : Si vous présentez des symptômes graves, des difficultés respiratoires ou des signes de déshydratation, appelez le 15 ou rendez-vous aux urgences les plus proches.

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 →

Recherche

Dernières recherches évaluées par les pairs et études cliniques

Voir la Recherche →

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 : 2026-06-29

Recent Dengue Fever Reports

No confirmed cases reported in Nevada yet. Here are the latest Dengue Fever reports from our global surveillance network.

In 2025, Colombia reported 123 745 dengue cases and 118 confirmed deaths, corresponding to a national case fatality rate of 0.09% and an incidence of 370.7 cases per 100 000 inhabitants, substantially lower than in 2024 but still above historical baseline levels. Most cases were …

Colombia · 2026-06-27

Autochthonous transmission of dengue (type 2) has been reported in Taiwan, with 4 cases in Kaohsiung City. Increased mosquito activity related to rain, especially following typhoons, is thought to be increasing risk of transmission. *Source: BEACON* - [View Full Report](https://…

Taiwan · 2026-05-24

This event envelope contains reports on Dengue in Vanuatu. *Source: BEACON* - [View Full Report](https://beaconbio.org/en/event/?eventid=8579d91f-76c1-46e4-9d0f-0908880602b7)

Vanuatu · 2026-06-26

This event envelope contains reports on Dengue in Viet Nam. *Source: BEACON* - [View Full Report](https://beaconbio.org/en/event/?eventid=3a91e29c-d693-4670-97d3-73e10352519e)

United States · 2026-06-08

Through epidemiological week 21 (data as of 01 Jun 2026), Mexico has recorded 2286 confirmed dengue cases, 23 718 probable cases, and 4 confirmed deaths nationally—a markedly quiet year, with confirmed cases down roughly 38% and deaths down about 78% compared with the same period…

Mexico · 2026-06-07

This event envelope contains reports on dengue in Brazil. *Source: BEACON* - [View Full Report](https://beaconbio.org/en/event/?eventid=4a4130b0-6a6c-4f10-9859-e2297a985d27)

Brazil · 2026-06-08

This event envelope contains reports on dengue in Yemen. *Source: BEACON* - [View Full Report](https://beaconbio.org/en/event/?eventid=2da917f7-8c72-4975-8823-087f57e306af)

Yemen · 2026-06-15

Georgia has reported up to eight imported dengue cases annually, with no evidence of autochthonous (locally acquired) transmission. *Source: BEACON* - [View Full Report](https://beaconbio.org/en/event/?eventid=ddb4120b-71b0-4d6f-8188-0d31839b3cf9)

Georgia · 2026-06-04

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