Google’s new Dengue Trends website attempts to provide near real-time estimates for the spread of dengue fever. Current activity is shown on a world map and categorized as wither Minimal, Low, Moderate, High, or Intense. Information is currently available for 5 countries – Bolivia, Brazil, India, Indonesia and Singapore. Data for previous periods is also made for download.
The application uses the same method as Google Flu Trends: estimates for dengue activity are based on aggregated Google search query queries for symptoms related to the disease. The significant benefit this has over traditional surveying methods is speed – reports compiled by local healthcare professionals often come with delays of weeks or months. Just like Flu trends, the tool is based on Correlate, Google’s new service which connects search metrics with other real-life data.