Early Flu Season Found Lurking in Social Data Liz Gannes, allthingsd.com A small start-up called Sickweather says public tweets and Facebook messages helped it declare an early start to this year’s U.S. flu season, six weeks before the CDC. Baltimore-based Sickweather tweeted about the early flu season on O… http://flip.it/j4OW2 Related articles The new bird…