The Centers For Disease Control and Prevention knew the Texas nurse who has contracted Ebola had a slight fever but allowed her to board a plane from Ohio to Texas anyway, CNN reported.
Amber Vinson, 29, flew from Cleveland to Dallas on Monday, the day before she was diagnosed with Ebola, CDC said, according to CNN. Vinson was isolated immediately after reporting a fever on Tuesday.
Vinson told the CDC her temperature was 99.5 Fahrenheit, but since that was below the CDC's temperature threshold of 100.4 "she was not told not to fly," a source told CNN.
Chances that other passengers were infected were very low because Vinson did not vomit on the flight and was not bleeding, but she should not have been aboard, CDC Director Dr. Thomas Frieden told reporters, CNN reported.
A hearing to discuss the U.S. response to the Ebola outbreak is to be held by Congress on Thursday, according to CNN.
Three other people who might have come into contact with her have been treated, and two have been discharged, the hospital said in a statement, CNN reported.
Vinson, who is a worker at Texas Health Presbyterian Hospital in Dallas, had taken a Frontier Airlines flight to Cleveland from Dallas/Fort Worth International Airport on Friday, according to CNN. She returned to Dallas on Monday aboard Frontier Flight 1143.
The CDC has since asked more than 130 passengers who were also on the flight to call a CDC hotline, CNN reported.
The plane was taken out of service by Frontier on Wednesday morning for cleaning, according to CNN. Between the initial flight on Friday and Wednesday, the plane made at least five more flights.
The two pilots and four flight attendants are on a paid 21-day leave of absence as a precaution, CNN reported.
