A Novel Dataset of Misinformation Tweets Regarding the CoronaVac Vaccine in Brazil

This dataset was built to analyze the spread of misinformation about CoronaVac in Brazil by using data from Twitter for two specific events: the approval for emergency use in adults over 18 years old (January 17, 2021) and the approval for use in children aged 6 to 17 years (January 20, 2022).

We choose to label the original tweets with at least one retweet in the analyzed period. The manual labeling of such tweets was initially performed by two annotators with high knowledge about the dataset and the considered context. In cases in which there was no agreement between the two annotators, a third annotator was considered to define the class of the tweet. 

The final dataset contains 1,010 tweets from January 17, 2021, and 816 tweets from January 20, 2022.

This dataset was originally built for a conference paper accepted at BraSNAM 2022. If you make use of the dataset, please also cite the following paper:

Gabriel P. Oliveira, Beatriz F. Paiva, Ana Paula Couto da Silva, and Mirella M. Moro. Characterizing the Diffusion of Misinformation Regarding the CoronaVac Vaccine in Brazil. In Proceedings of the XI Brazilian Workshop on Social Network Analysis and Mining (BraSNAM 2022), 2022.

@inproceedings{brasnam/OliveiraPSM22,
  title = {Characterizing the Diffusion of Misinformation Regarding the CoronaVac Vaccine in Brazil},
  author = {Gabriel P. Oliveira and 
            Beatriz F. Paiva and 
            Ana Paula Couto da Silva and
            Mirella M. Moro},
  booktitle = {Proceedings of the XI Brazilian Workshop on Social Network Analysis and Mining (BraSNAM)}
  year = {2022}
}