Using Social Media to Perform Local Influenza Surveillance in an Inner-City Hospital: A Retrospective Observational Study

David Andre Broniatowski   ¹ , PhD ;   Mark Dredze   ² , PhD ;   Michael J Paul   ³ , PhD ;   Andrea Dugas   ⁴ , MD,PhD

¹ Department of Engineering Management and Systems Engineering, The George Washington University, Washington, DC, United States

² Human Language Technology Center of Excellence, Johns Hopkins University, Baltimore, MD, United States

³ Department of Computer Science, Johns Hopkins University, Baltimore, MD, United States

⁴ Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States