> All the viral genome sequences from affected individuals are very very close to each other. Several are identical and none has more than 5 differences (99.983% similarity). This strongly suggests that transmission into humans came from a single pointed source and happened very recently, between Sep-Dec 2019.

> Given what we are learning from viral genome sequencing above, and given all the emergency measures being put in place in China in particular and around the world in general, there is every reason to believe that the epidemic will be controlled shortly.