The problem occurs when someone gets transmitted in Dallas and then accidentally travels to another city..........thats where the race to quarantine is.......and how many along the way on a greyhound or domestic airline.......The horrendous potential of this virus is understated.
The real problem is the epidemic in Africa is growing, and as more and more people get it the risk of some of them traveling to the U.S. and causing new unsuspected clusters will grow.