Authorities have identified 16 people who had contact with Vinson while she was there and they are being monitored but none of them is sick. They are still seeking people who may have crossed paths with the nurse while she visited the Coming Attractions bridal shop in Akron with five friends, who are all under voluntary quarantine.
Because Ebola is only transmitted through the bodily fluids of someone who is showing symptoms of infection, officials think it is highly unlikely that there will be an outbreak in Ohio.
Vinson, 29, had extensive close contact with Thomas Eric Duncan, the Liberian man who died of Ebola on Oct. 8 at the Dallas hospital where she worked.
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Because his medical team wore protective equipment, they were not initially considered to be at risk of exposure—so Vinson was not barred from traveling, even after she reported a low-grade fever before she boarded a flight back to Dallas on Oct. 13.
The CDC has now revised its thinking on the risk to health-care workers who used the equipment.
"We know that preventing exposure is even harder than we thought," he said. "At that time there wasn't a limitation of their movement. Now there is a limitation on their movement... Those health-care workers—we now know they should not have traveled."