Researchers at the London School of Hygiene & Tropical Medicine have launched the world's first early warning system for dengue fever. The Global Dengue Observatory compiles data from 88 countries to provide monthly estimates of dengue cases globally and continentally.
The system offers an outbreak forecasting tool that measures the impact of climate change and other factors on dengue and related diseases. The dashboard will be updated monthly, offering insights into infection rate changes due to environmental shifts or public health interventions.
As of February 26, 2026, an estimated 253,173 dengue cases have been reported globally, a figure below the five-year average. The dengue season is forecast to peak this month in countries like Brazil and Argentina.
This tool is designed to help policymakers and healthcare professionals assess outbreak severity and determine the need for additional control measures, such as insecticide spraying or community clean-up efforts. Travelers can also use the system to understand and mitigate their personal risk.
Dengue is a viral infection transmitted by mosquitoes, with the WHO estimating 100-400 million infections annually. Half the world's population is at risk. Severe dengue can be fatal, and early detection is crucial for reducing fatality rates.