Genome phylogenetic tree analyses revealed evidence that the severe acute respiratory syndrome coronavirus 2 had been introduced to Taiwan, the United States, and Japan several times Tomoko Matsuda1 and Norichika Ogata1,2,* 1 Nihon BioData Corporation, Kawasaki, Japan, 2 Medicale Meccanica Inc., Kawasaki, Japan *norichik@nbiodata.com Abstract— Worldwide Severe acute respiratory syndrome coronaviru
