Dengue fever is a viral infection caused by the dengue virus (DENV), transmitted to humans through the bite of infected Aedes mosquitoes. It is a widespread disease, most common in tropical and subtropical regions globally, affecting millions annually. Track dengue fever activity and outbreaks specific to New Hampshire.
Transmission methods vary.
Contagious Period: Varies by disease
Local health department information and state-specific prevention guidance
Our AI-powered surveillance continuously monitors dengue fever activity across New Hampshire. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.
Get instant push notifications when dengue fever activity increases in New Hampshire or your specific county.
For official state health alerts, vaccination locations, and public health guidance specific to New Hampshire, visit your state health department's website.
Whether you live in New Hampshire, are traveling there, or have family in the state, understanding dengue fever prevention is essential. Follow these evidence-based prevention measures:
If you experience symptoms of dengue fever in New Hampshire, contact your healthcare provider immediately. Early diagnosis and treatment improve outcomes significantly.
Emergency symptoms: If you experience severe symptoms, difficulty breathing, or signs of dehydration, call 911 or go to your nearest emergency room.
Trusted information from leading health organizations
Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-03-04
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