Public attitudes toward COVID-19 vaccines on English-language Twitter: A sentiment analysis

•Public sentiment on COVID-19 vaccines varied significantly over time and geography.•Sentiment analysis is an effective way to gain insight into the public's sentiment towards the covid-19 vaccine.•Twitter has become an important platform for gathering public opinion. To identify themes and temporal trends in the sentiment of COVID-19 vaccine-related tweets and to explore variations in sentiment at world national and United States state levels. We collected English-language tweets related to COVID-19 vaccines posted between November 1, 2020, and January 31, 2021. We applied the Valence Aware Dictionary and sEntiment Reasoner tool to calculate the compound score to determine whether the sentiment mentioned in each tweet was positive (compound ≥ 0.05), neutral (-0.05