We wont know how fast it is spreading because of lack of tests..
I suppose you can kind of guess through using the serious cases
After the testing catches up the data will be useful. But that will probably be weeks or longer.
I think daily deaths would be the best indicator, hard to find a record though. Critical cases would be a good indicator. Maybe better.
THree people from Mar a lago have tested positive. I don’t believe the Brazil President so I am saying he is likely a fourth.
https://nypost.com/2020/03/14/third-person-at-mar-a-lago-with-trump-tests-positive-for-coronavirus/
Trump has tested Negative. We do know that you can go Negative and still have it.
That said, I hope he takes this as a warning that he needs to keep his distance as leaders are getting this.
He needs to sort of go to the mattresses,..we arent totally there yet...but sort of...