Simulation and phylogeographic analyses (Worobey et al. 2020), in addition to the detection of sequences belonging to lineage B in China, have already shown that the direct seeding of the Northern Italy outbreak from Munich is unlikely. J. Mossong, N. Hens, M. Jit, P. Beutels, K. Auranen, R. Mikolajczyk, M. Massari, S. Salmaso, G. S. Tomba, J. Wallinga, J. Heijne, M. Sadkowska-Todys, M. Rosinska, W. J. Edmunds, Social contacts and mixing patterns relevant to the spread of infectious illnesses. Despite the early successes in containment, SARS-CoV-2 ultimately took hold in each Europe and North America during the first 2 months of 2020—first in Italy around the end of January, then in Washington state across the starting of February, and followed by NYC later that month. Our analyses therefore delineate when widespread community transmission was first established on each continents (Fig. 6) and make clear the period earlier than SARS-CoV-2 institution when contact tracing and isolation may need been handiest. Phylogeny of consultant sequences, exhibiting connections between sequences that share derived mutations despite differences at the key site 17747.