The author doesn’t seem to know much about testing for Ebola.
The test will show Ebola is present...right about the time symptoms start to appear.
The entire freaking reason we have a quarantine is precisely because there is no reliable Ebola test, until after its too late to prevent transmission.
She’s been back in the US for one week...it is not at all improbable that she in infected with Ebola right now...nobody really knows until the 21 day period is up.
Make that 42 days.