& the first case just popped up in the US.
The 30-something Washington state resident fell sick with pneumonia after returning to Seattle from Wuhan, China— the outbreak epicenter — Jan. 15. 1/
vox.com/2020/1/21/2107…
That is fast. 2/
Officials are now doing contact tracing to figure out if he infected anybody else. 3/
The news comes just as WHO confirmed human to human transmission of virus is happening — and it may be happening easily. 4/
But fact that cases already turned up in six countries, including US, means this outbreak is already likely larger than the some 300 cases China reports. /5