Welcome! We are tracking disease trends, 140 characters at a time

3,131,438

63,925 (2%)

2,159,817 (68%)

tweets gathered from Twitter's Streaming API. All of them match at least one of the 234 condition terms currently tracked across 27 conditions.

tweets with a sensor-based location (read more about how we calculate this)

tweets with a popular user profile location (read more about how we calculate this)