The second Ebola-infected nurse from a Dallas hospital contacted Centers for Disease Control and Prevention officials on Monday to check if she could get on a plane with an elevated temperature, and was not barred from taking the flight, NBC News has learned.

At the time, the CDC was still considering health care workers who treated Ebola patient Thomas Eric Duncan but wore protective gear to be at lower risk, and based on those guidelines Amber Vinson wasn’t warned to stay off the commercial jet, a government spokesperson told NBC News late Wednesday.

"Vinson was not told that she could not fly," said the spokesperson.