COVID-19(21) Analysis(13) Spread(12) identify(10) Cluster(9) SARS-CoV-2(8) COVID-19 cases(7) detect(7) Variation(7) virus(7) risk(7) Clustering(7) COVID-19 case(7) Algorithm(6) outbreak(6) SARS-COV-2 infection(6) SARS-CoV-2 infections(6) Infection(6) Local(5) mathematical(5) spatiotemporal(5) pandemic(5) public health(5) variable(5) explain(5) Regression model(5) Space-time clusters(5) determinant(5) were used(5) information(4)