U.S. health officials are searching for the 132 people who flew on a plane with Dallas nurse, Amber Vison, on the day before she came down with Ebola symptoms. Experts note that those who are not showing symptoms of Ebola are not contagious.

Health officials stated that Vinson should not have flown on the commercial flight on Monday. Vinson cared for Ebola patient Thomas Eric Duncan. Another health care worker who dealt with Duncan was also diagnosed with Ebola.

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The Frontier Airlines jet that transported Vinson continued to make five additional flights afterward. It was then taken out of service, according to a flight-monitoring website.

The CDC will ensure that no others in a similar situation to Vinson travel outside of a closed environment.

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