SARS-CoV-2 (which causes COVID-19) is slowly mutating as it propagates throughout the world.

by acoustic_phil

This has allowed researchers to use genetics to map out where particular viral strains came from. This is an amazing visualisation of COVID-19 strains in terms of their genetic epidemiology. source GISAID

nextstrain.org/ncov?fbclid=IwAR18_LwxiW_gDla6SmWUuOyXIFDiQEMisc5phb5xAt1kT0iTz2BvjcRBWTE