- Tweet collection stopped in December of 2020 and did not consider removed tweets due to misinformation
- Analysis tools used were not designed for health-related topics and could have potentially led to skewed results
- Only considered tweets in English 

University of Michigan - Ann Arbor

- Overall, there were significantly more tweets associated with positive than negative sentiments and the main emotion associated with the tweets was trust 
- Tweets from individual accounts contained more fear and less anticipation and trust compared to organizational accounts 
- Women showed more fear and less anticipation
- Users over the age of 40 were more fearful and put less trust in the vaccines and vaccine development
- 20% of the tweets contained elements of fear towards getting the vaccine, even though there are a lot more tweets with positive sentiments and the emotion of trust 

Public Perception of COVID-19 Vaccines through Analysis of Twitter Content and Users Discussion

Saleh, S. N., McDonald, S. A., Basit, M. A., Kumar, S., Arasaratnam, R. J., Perl, T. M., ... & Medford, R. J. (2021). Public Perception of COVID-19 Vaccines through Analysis of Twitter Content and Users. medRxiv. https://www.medrxiv.org/content/10.1101/2021.04.19.21255701v1

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