No one who wasn’t a health care worker directly involved in the care of Duncan was infected. Even his fiance and son. Apparently he was cleaning up after himself before he went to the hospital, so they weren’t exposed, directly, to his bodily fluids.
All of the other cases in the US, with the exception of the camera man, were health care workers who’d been in west Africa. Duncan wasn’t a health care worker – but was exposed helping a pregnant neighbor, apparently unaware she had ebola, and not just complications from her pregnancy.
The doctor in NY did not expose an entire ER while showing symptoms. NYC and the doctor seemed to handle it well. The bowling alley was visited before he showed symptoms.
To date – no one from the flight that Vinson took has shown symptoms.
You may now return to your previously scheduled panic.