Auditing the impact of social media’s policy shift on anti-vaccine discourse: A large language model-driven empirical study
Fig 7
Top 20 most retweeted tweets during the study period, colored by vaccine stance.
Hatched bars indicate tweets from the post-policy period (Nov 24–30). Despite having shorter observation windows for accumulating retweets (0–6 days versus 8–14 days for pre-policy tweets), post-policy tweets comprised 50% of the top 20 most retweeted tweets, suggesting accelerated spread of anti-vaccine content following policy termination.