Open Access“Down the Rabbit Hole” of Vaccine Misinformation on YouTube: Network Exposure Study
Author(s) -
Lu Tang,
Kayo Fujimoto,
Muhammad Amith,
Rachel Cunningham,
Rebecca A Costantini,
Felicia N. York,
Grace Xiong,
Julie A. Boom,
Cui Tao
Publication year - 2021
Publication title -
jmir. journal of medical internet research/journal of medical internet research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.446
H-Index - 142
eISSN - 1439-4456
pISSN - 1438-8871
DOI - 10.2196/23262
Subject(s) - misinformation , social media , computer science , social network (sociolinguistics) , internet privacy , world wide web , multimedia , computer security
Background Social media platforms such as YouTube are hotbeds for the spread of misinformation about vaccines. Objective The aim of this study was to explore how individuals are exposed to antivaccine misinformation on YouTube based on whether they start their viewing from a keyword-based search or from antivaccine seed videos. Methods Four networks of videos based on YouTube recommendations were collected in November 2019. Two search networks were created from provaccine and antivaccine keywords to resemble goal-oriented browsing . Two seed networks were constructed from conspiracy and antivaccine expert seed videos to resemble direct navigation . Video contents and network structures were analyzed using the network exposure model. Results Viewers are more likely to encounter antivaccine videos through direct navigation starting from an antivaccine video than through goal-oriented browsing. In the two seed networks, provaccine videos, antivaccine videos, and videos containing health misinformation were all found to be more likely to lead to more antivaccine videos. Conclusions YouTube has boosted the search rankings of provaccine videos to combat the influence of antivaccine information. However, when viewers are directed to antivaccine videos on YouTube from another site, the recommendation algorithm is still likely to expose them to additional antivaccine information.