Virus wiki
Dengue
Dengue is the most common mosquito-borne viral disease globally; repeated infections increase risk of severe dengue in some individuals.
Snapshot: 5/10/2026, 10:57:16 AM · 2 tracked locations · 207,609 active cases (dataset)
Important
Virus Tracker provides aggregated outbreak monitoring for education and situational awareness. It is not medical advice, a diagnostic service, or a substitute for guidance from qualified health professionals or official public health agencies. Always consult licensed clinicians and authoritative sources for personal health decisions.
Overview
Four serotypes circulate, enabling sequential infections that shape population immunity profiles. Urbanization and vector expansion widen the at-risk map. Virus Tracker highlights active-case heat and trajectory proxies to support seasonal preparedness.
Transmission
Aedes mosquitoes transmit dengue viruses; vertical transmission and blood products are secondary concerns.
Symptoms & clinical notes
Classic dengue fever with pain behind the eyes, rash, and leukopenia; warning signs herald plasma leakage in severe dengue.
Prevention & control
Vector control, community cleanup campaigns, Wolbachia programs where deployed, and cautious fluid management in hospitals. Vaccines exist in select jurisdictions with specific eligibility rules.
Surveillance context
Entomological indices and case notification together guide outbreak classification. Serotype data informs epidemic forecasting.
Key metrics
Active cases (dataset)
207,609
Reported deaths
1,952
Pressure index
8.18%
Dengue — global infection heat map
Country shading reflects relative active-case intensity from the current Virus Tracker dataset for this pathogen. Hover countries on desktop for counts.
Trajectory outlook
Trajectory (14d)
Regional analysis
Top regions by active cases
Top 2 tracked locations for Dengue by active cases in the current dataset.
Threat intelligence visuals
Threat Matrix
Pressure (x) vs CFR (y) with bubble size by active cases
Source Reliability
Healthy sources
4
Unhealthy sources
3
Average confidence
41.0%
Confidence exposure
85,459
Health ratio
Severity by Region
Top affected regions
| Location | Active | Deaths |
|---|---|---|
| Bangladesh (BD) | 120,758 | 1,250 |
| Brazil (BR) | 86,851 | 702 |
FAQ
Is this page medical advice?
Virus Tracker provides aggregated outbreak monitoring for education and situational awareness. It is not medical advice, a diagnostic service, or a substitute for guidance from qualified health professionals or official public health agencies. Always consult licensed clinicians and authoritative sources for personal health decisions.
What does the pressure index mean on Virus Tracker?
Pressure index reflects active-case burden relative to recoveries in our models. It helps compare stressed outbreak zones within the dataset—it is not a clinical score.
How often is this wiki updated?
Figures refresh on the site’s ingestion and revalidation schedule (typically about every 30 minutes in production). Timestamps on the dashboard snapshot indicate the last build of the underlying dataset.
Why might the heat map not match official government totals?
We merge multiple open sources and fallbacks; reporting lag, testing policy, and geographic coverage differ by country. Use national health ministries for authoritative case definitions.