Key question: How did Dallas worker catch Ebola?
By MARILYNN MARCHIONE, Associated Press
Oct 12, 2014 2:17 PM CDT
Dr. Tom Frieden, head of the Centers for Disease Control and Prevention, speaks at a news conference, Sunday Oct. 12, 2014, in Atlanta. A Texas health care worker, who was in full protective gear when providing hospital care for Ebola patient Thomas Eric Duncan, who later died, has tested positive for...   (Associated Press)

Officials are investigating how a Dallas health worker who treated an Ebola patient ended up with the disease herself.

They say the worker wore full protective gear while treating Thomas Eric Duncan, a Liberian man who died Wednesday at Texas Health Presbyterian Hospital. The worker doesn't know how she became infected, and officials suspect a breach in infection control protocols.

They are looking into how the worker removed her personal protective gear, which includes a gown, two sets of gloves, a face mask and an eye shield.

They also are examining the intensive medical procedures Duncan received. Those procedures include kidney dialysis and a breathing machine.

Both involve inserting tubes into blood vessels or an airway and can raise the risk of contact with bodily fluids.

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