The purpose of this study was to identify clusters formed in the Twitter network related to the topics of the Covid-19 vaccine. This study uses a quantitative approach with social network analysis with selective exposure cluster method. The population of this study is the use of the Twitter social network with the keyword "covid-19 vaccine" as a cluster sample. Data is collected using the NodeXL application. The data were analyzed by grouping based on the Clauset-Newman-Moore algorithm cluster by calculating the entire network of users, the level of hubs in the cluster, grouping in the network, finding the highest twitter network. The results showed that official government accounts, political figures, and mass media simultaneously appeared in all data sets so that they formed a cluster that consistently supported the success of the national vaccination program.