title: Understanding Vaccine Refusal: Why We Need Social Media Now.
authors.affiliation: Human Language Technology Center of Excellence, Johns Hopkins University, Baltimore, Maryland. Electronic address: mdredze@cs.jhu.edu.
authors.forename: Mark
authors.initials: M
authors.lastname: Dredze
authors.affiliation: Department of Engineering Management & Systems Engineering, School of Engineering and Applied Science, George Washington University, Washington, District of Columbia.
authors.forename: David A
authors.initials: DA
authors.lastname: Broniatowski
authors.affiliation: Department of Engineering Management & Systems Engineering, School of Engineering and Applied Science, George Washington University, Washington, District of Columbia.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Smith
authors.affiliation: Department of Health Promotion and Behavior, College of Public Health, University of Georgia, Athens, Georgia.
authors.forename: Karen M
authors.initials: KM
authors.lastname: Hilyard
mesh_terms: D006801:Humans; D032521:Immunity, Herd; D061108:Social Media; D014611:Vaccination / Q000523:psychology*; D000072758:Vaccination Refusal / Q000523:psychology*