title: Using social media and internet data for public health surveillance: the importance of talking.
authors.affiliation: Georgetown University Medical Center.
authors.forename: David M
authors.initials: DM
authors.lastname: Hartley
mesh_terms: D003141:Communicable Diseases / Q000453:epidemiology*; D006801:Humans; D033181:Information Dissemination / Q000379:methods*; D020407:Internet; D011634:Public Health / Q000706:statistics & numerical data*; D062486:Public Health Surveillance / Q000379:methods*; D061108:Social Media