health care worker with Ebola in Dallas took plane day before symptoms showed, officials say

The second health care worker to test positive for Ebola in Dallas traveled by air the day before presenting symptoms and being isolated, the CDC announced Wednesday.

Health officials identified the health care worker as Amber Vinson.

CDC Director Tom Frieden said Wednesday the worker is currently in the process of being transferred to Emory University Hospital in Atlanta, which has previously successfully treated two American Ebola patients without the disease spreading further. It is not clear yet when exactly that transfer will happen.

The revelation has raised alarm about further spread of the disease, which is transmitted through body fluids such as blood and saliva after the victim starts showing symptoms.

In response to the latest Ebola case, the White House announced Tuesday that President Obama is calling off a planned trip to New Jersey and Connecticut and instead will convene Cabinet officials coordinating the government's Ebola response.

The CDC said it is attempting to track down all 132 passengers aboard the plane the health care worker took because of "the proximity in time between the evening flight and first report of illness. Officials identified the flight taken by the worker as Frontier Airlines flight 1143 from Cleveland to Dallas/Fort Worth on October 13. They said anyone aboard the plane should call 1 800-CDC INFO (1 800 232-4636) immediately.

Vinson exhibited no signs or symptoms of illness while on flight 1143, according to the crew.

On Wednesday, Mayor Frank Jackson said there were currently no known Ebola cases in Cleveland. However, Cleveland health officials activated an emergency command center for Ebola "situation awareness."

In a statement, Frontier Airlines said they "will continue to work closely with CDC and other governmental agencies to ensure proper protocols and procedures are being followed." The airline also said the plane has been thoroughly cleaned and was removed from service following CDC notification early Wednesday morning.

However, according to Flighttracker, the plane was used for five additional flights on Tuesday before it was removed from service. Those flights include a return flight to Cleveland, Cleveland to Fort Lauderdale-Hollywood International Airport (FLL), FLL to Cleveland, Cleveland to Hartsfield-Jackson Atlanta International Airport (ATL), and ATL to Cleveland.