Wikipedia
Flutrack is a system that detects influenza symptoms by processing and displaying influenza related Twitter messages. Flutrack platform gathers and visualizes tweets every 20 minutes in real time. This open platform and its API allow users and developers to extend this project and take influenza detection to higher levels. The platform could work not only with Twitter but with any data provider.
For monitoring purposes, Flutrack gathers flu related tweets for the entire world using the Twitter API. Since the above procedure is complete, the system visualizes and updates tweets every 20 minutes. The Flutrack open-platform differs from similar tracking services in that it extracts and processes flu related data in real time, without interruption.