SARS-CoV-2 jumped from bats to humans without much change, study finds

How much did SARS-CoV-2 need to change in order to adapt to its new human host? New research shows that since December 2019 and for the first 11 months of the SARS-CoV-2 pandemic, there has been very little 'important' genetic change observed in the hundreds of thousands of sequenced virus genomes.