Exploring COVID-19 public perceptions in South Africa through sentiment analysis and topic modelling of Twitter posts. The African Journal of Information and Communication (AJIC), South Africa, n. 31, 2023. DOI: 10.23962/ajic.i31.14834. Disponível em: https://ajic.wits.ac.za/article/view/14834. Acesso em: 4 dec. 2024.