The Complex Relationship of Realspace Events and Messages in Cyberspace: Case Study of Influenza and Pertussis Using Tweets

Anna C Nagel   ¹ , MPH ;   Ming-Hsiang Tsou   ² , PhD ;   Brian H Spitzberg   ³ , PhD ;   Li An   ² , PhD ;   J Mark Gawron   ⁴ , PhD ;   Dipak K Gupta   ⁵ , PhD ;   Jiue-An Yang   ² , MA ;   Su Han   ² , MS ;   K Michael Peddecord   ¹ , PhD ;   Suzanne Lindsay   ¹ , PhD ;   Mark H Sawyer   ^{6, 7} , MD

¹ Graduate School of Public Health, San Diego State University, San Diego, CA, United States

² Department of Geography, San Diego State University, San Diego, CA, United States

³ School of Communication, San Diego State University, San Diego, CA, United States

⁴ Department of Linguistics, San Diego State University, San Diego, CA, United States

⁵ Department of Political Science, San Diego State University, San Diego, CA, United States

⁶ Division of Pediatrics Infectious Diseases, University of California San Diego School of Medicine, La Jolla, CA, United States

⁷ Epidemiology and Immunization Services Branch, City of San Diego Health and Human Services Agency, San Diego, CA, United States