One of many possible scenarios, but limited genomic data does not confirm that this is true.
https://twitter.com/DrEricDing/status/1236895348737609735 …
FASCINATING- according to virus 
- the WA #COVID19 cluster is likely source that 
infected the Grand Princess 
! Would have been hard to figure that out without genomic epidemiology. Also indicates the virus has crossed state borders beyond WA long ago before departed SF. https://twitter.com/trvrb/status/1236801189741596672 …
- the WA infected the Grand Princess ! Would have been hard to figure that out without genomic epidemiology. Also indicates the virus has crossed state borders beyond WA long ago before departed SF. https://twitter.com/trvrb/status/1236801189741596672 …
