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. 2021 Jan 5;23(1):e23262. doi: 10.2196/23262

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©Lu Tang, Kayo Fujimoto, Muhammad (Tuan) Amith, Rachel Cunningham, Rebecca A Costantini, Felicia York, Grace Xiong, Julie A Boom, Cui Tao. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 05.01.2021.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Visualization of the four YouTube video networks, where each node represents a video and an edge represents a related link. Green represents a provaccine video and red represents an antivaccine video. Gray nodes are nonvaccine-related videos. The size of the nodes depicts the exposure value to antivaccination videos. Visualization was generated with Gephi.