Hope the CDC is on this.
“I read on some thread yesterday that the family of the US doctor who died had visited him before he took ill, they have since returned to the US.”
They reported that yesterday morning on my local station, DFW Fox 4. This morning they said that the family is being monitored for any signs of the disease. I reckon some people called the station with the same concerns you had hence the reason for a follow up story.
Which US doctor died?