We make a variety of data available concerning health trends derived from Twitter data. This includes influenza surveillance for a variety of locations.


Carmen is a library for geolocating tweets. Given a tweet, Carmen will return Location objects that represent a physical location. Carmen uses both coordinates and other information in a tweet to make geolocation decisions. It's not perfect, but this greatly increases the number of geolocated tweets over what Twitter provides.
[Code on Github]

Twitter Stream Downloader

Code for downloading data using the Twitter streaming API.
[Code on Github]

Additional Resources

Michael Paul has additional resources on his homepage.