Network based on virus in betacoronavirus and the corresponding host. In the network, nodes represent the genus, subgenus, species, and hosts of viruses, with node size proportional to the number of viruses. We have employed abbreviations to show the viral species and hosts, with their corresponding full names available in Supplementary Data 2 and Data 6 . Lines are drawn between virus genus and its subgenus, subgenus and its species, and between each virus species and its corresponding hosts. To distinguish between the three levels of connections, the line widths decrease in the order from genus to subgenus to species. Running Community Detection named Modularity in the statistics page yields a Modularity Class value for each node, with node color ranking based on the Modularity class. The line colors change with the node colors.