Perspective on the spatio-temporal spread of epidemics in metapopulation networks Jianbo Wang, Zhanwei Du, Hui-Jia Li, Lei Wang, Xiao-Ke Xu, Zhen Wang, Lin Wang and Xiang Li EPL, 144 1 (2023) 11001 Published online: 10 October 2023 DOI: 10.1209/0295-5075/acfab8