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Dengue and arboviruses
Monitoring: Florida Surgeon General Reminds Floridians to Take Precautions Against Dengue Ahead of Labor Day Weekend
Disease intelligence sheet
Dengue
Curated desk background for reporters who need the pathogen, transmission, and outbreak frame fast.
Pathogen / agent: Dengue virus
Transmission: Aedes mosquitoes
Reservoir / vector: Aedes aegypti and Aedes albopictus mosquitoes drive transmission.
Incubation: Usually 4 to 10 days after an infectious mosquito bite.
Severity: Most illness is self-limited, but severe dengue can decompensate quickly.
Diagnostics: PCR or antigen testing early, serology later, plus attention to exposure geography.
Treatment: Supportive care with careful fluid management.
Prevention: Mosquito control, bite avoidance, and vaccine policy where appropriate.
Vaccine / prevention status: Vaccines exist in a limited and policy-contingent way; most outbreak control still depends on vector ecology and clinical recognition.
Symptoms And Clinical Pattern
- Fever, headache, retro-orbital pain, and myalgias.
- Rash and leukopenia are common.
- A subset progress to severe dengue with plasma leakage or bleeding.
Official Background Links
Current Story Files
Why Reporters Care
Why this keeps becoming news: Dengue is now one of the best climate-and-city disease stories on earth because mosquito range, urban crowding, and health-system stress all show up in it.
What journalists often get wrong: Coverage frequently treats dengue as a generic tropical fever and underplays serotype history, hospitalization pressure, and the difference between routine seasonal burden and exceptional surge.
- Cases, severe dengue, hospitalizations, and deaths.
- Serotype shifts, if reported, because they can change severity expectations.
- Urban mosquito control failure and the pace of geographic expansion.
Last Major Outbreak On File
Unprecedented global 2024 surge | Global, especially the Americas | 2024
WHO's 2024 update recorded 14,434,584 dengue cases worldwide, including 11,201 deaths, with more than 90% of reported cases coming from the Region of the Americas.
Source: WHO Weekly Epidemiological Record (2025-12-26 publication covering 2024)
Desk Notes And Historical Signals
Desk note: This belongs near the top of any global outbreak desk because climate, vector range and urban vulnerability all keep widening the playing field.
Research caveats: Reported case totals can surge when testing changes, and severity comparisons across countries are often not apples to apples.
- Brazil alone reported more than 10 million cases in the cited WHO 2024 update.