- Location
- HSB Room 106
- Series/Type
- Alumni Event, DLSPH Event, Faculty/Staff Event, Student Event
- Format
- In-Person
- Dates
- June 5, 2025 from 9:30am to 10:45am
Links
The Institute for Pandemics welcomes Professor Daniel Barnett on June 5, 2025, to present a lecture on his work on public health emergencies.
Lecture Title: Message Mapping as a Tool for Public Health Emergency Risk Communication: Social Media-Related Considerations
In the face of a widening array of threats to population health, research on public health agencies’ leveraging of social media for public health emergency risk messaging has critical and timely relevance. In this presentation, entitled Message Mapping as a Tool for Public Health Emergency Risk Communication: Social Media-Related Considerations, Dr. Daniel Barnett from Johns Hopkins Bloomberg School of Public Health will present findings from his team’s research in Odisha, India to map dissemination and viewers’ consumption of YouTube videos on COVID-19 vaccination health messaging. Contrasting videos were launched on the YouTube platform to examine how each operates within the wider recommender and subscription systems that determine the audience reach. The role of key variables, including collectivistic versus individualistic messaging appeals, were examined. Video analytics, algorithms for recommended videos, visual representation of connections, centrality between the networks, and comment analysis were conducted. The results are highly applicable to public health emergency risk communicators who seek to better understand the platform mechanisms that determine the spread of videos and measures of viewer reactions based on viewer sentiment. Dr. Barnett will present these and additional central results of these findings, along with presently unpublished discussion of this research’s current and future potential implications for the interface between social media and public health crisis risk communication in high-, and low-and middle-income country (LMIC) settings.
Speaker Biography
Dr. Daniel Barnett is a Professor in the Department of Environmental Health and Engineering at Johns Hopkins Bloomberg School of Public Health (JHBSPH), where he has joint appointments in the Department of Health Policy and Management and in the Department of Health, Behavior and Society. He directs the Public Health Preparedness Certificate Program at JHBSPH. Dr. Barnett’s research includes a focus on psychosocial resilience dimensions of public health & healthcare system functioning during and after disasters. He received his MD degree from The Ohio State University College of Medicine, and he completed his residency training in General Preventive Medicine at Johns Hopkins.
