Twitter and Public HealthBartlett, Catherine BS; Wurtz, Rebecca MD, MPHJournal of Public Health Management and Practice: July/August 2015 - Volume 21 - Issue 4 - p 375–383 doi: 10.1097/PHH.0000000000000041 Original Articles Abstract In Brief Author InformationAuthors Article MetricsMetrics Twitter can serve as a powerful communication modality to both “push” and “pull” public health data; each user is a potential public health sensor and actor. However, in 2012, only 8% of local health departments had Twitter accounts. We outline how Twitter works, describe how to access public tweets for public health surveillance purposes, review the literature on Twitter's current and potential role supporting public health's essential services, summarize Twitter's limitations, and make recommendations for health department use. This study outlines how Twitter works, describes how to access public tweets for public health surveillance purposes, reviews the literature on Twitter' current and potential role supporting public health' essential services, summarizes Twitter' limitations, and makes recommendations for health department use. Northwestern University Feinberg School of Medicine, Program in Public Health, Chicago, Illinois (Ms Bartlett and Dr Wurtz). Correspondence: Rebecca Wurtz, MD, MPH, Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, 680 N. Lake Shore Dr, Ste 1400, Chicago, IL (firstname.lastname@example.org). The authors declare no conflicts of interest. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.