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10/15/2014 05:11 am ET Updated Oct 15, 2014

Second Health Care Worker At Texas Health Presbyterian Hospital Tests Positive For Ebola

A second health care worker at Texas Health Presbyterian Hospital Dallas has tested positive for Ebola, the Texas Department of State Health Services announced early Wednesday.

The unidentified health care worker treated Thomas Eric Duncan, a Liberian man who tested positive for the disease on Sept. 30. Duncan was the first person to have been diagnosed with the virus in the U.S. He died on Oct. 8.

After reporting a fever on Tuesday, the health care worker was put into isolation. Authorities are now searching for anyone who may have been in contact with the worker.

Nina Pham, the first nurse diagnosed with Ebola after treating Duncan, is also in isolation at Texas Health Presbyterian Hospital Dallas. According to the Centers for Disease Control and Prevention, it is still not clear how she became infected.

In total, about 70 hospital staff members were involved in Duncan's care.

More from the AP:

DALLAS (AP) — A second health care worker at a Dallas hospital who provided care for the first Ebola patient diagnosed in the U.S. has tested positive for the disease, the Texas Department of State Health Services said Wednesday.

The department said in a statement that the worker reported a fever Tuesday and was immediately isolated at Texas Health Presbyterian Hospital in Dallas. Health officials said the worker was among those who took care of Thomas Eric Duncan, who was diagnosed with Ebola after coming to the U.S. from Liberia. Duncan died Oct. 8.

The department said a preliminary Ebola test was conducted late Tuesday at a state public health laboratory in Austin, Texas, and came back positive during the night. Confirmatory testing was being conducted at the federal Centers for Disease Control and Prevention in Atlanta.

The statement said the health care worker, who wasn't identified, was interviewed to quickly identify any contacts or potential exposures. It said others who had interactions with the worker or possible exposure to the virus will be monitored.

Officials have said they don't know how the first health worker, a nurse, became infected. But the second case pointed to lapses beyond how one individual may have donned and removed personal protective garb.

"An additional health care worker testing positive for Ebola is a serious concern, and the CDC has already taken active steps to minimize the risk to health care workers and the patient," the CDC said in a statement.

"What happened there (in Dallas), regardless of the reason, is not acceptable. It shouldn't have happened," Anthony Fauci, director of the Institute of Allergy and Infectious Diseases of NIH, said on MSNBC on Wednesday.

Fauci said he envisioned the CDC taking "a much more involved role" in establishing the proper training protocols for Ebola cases.

The CDC said its experts had taken part in interviewing the second health care worker to identify any contacts or potential exposures in the community.

Dr. Tom Frieden, head of the CDC, has acknowledged that the government wasn't aggressive enough in managing Ebola and containing the virus as it spread from an infected patient to a nurse at a Dallas hospital.

"We could've sent a more robust hospital infection control team and been more hands-on with the hospital from day one about exactly how this should be managed," he said Tuesday.

Frieden outlined new steps this week designed to stop the spread of the disease, including the creation of an Ebola response team, increased training for health care workers nationwide and changes at the Texas hospital to minimize the risk of more infections.

"I wish we had put a team like this on the ground the day the patient — the first patient — was diagnosed. That might have prevented this infection," Frieden said.

The stark admission came as the World Health Organization projected the pace of infections accelerating in West Africa to as many as 10,000 new cases a week within two months.

Health and Human Services Secretary Sylvia Burwell, appearing Wednesday on NBC's "Today" show, sidestepped questions about whether she had complete confidence in the Texas hospital where the health care workers have been diagnosed with Ebola or whether they should be transferred to one of four specialized hospitals. "We will keep all options and considerations right now," she said.

In a conference call late Tuesday, the nation's largest nurses' union described how the patient, Duncan, was left in an open area of the emergency room for hours. National Nurses United, citing unidentified nurses, said staff treated Duncan for days without the correct protective gear, that hazardous waste was allowed to pile up to the ceiling and safety protocols constantly changed.

RoseAnn DeMoro, executive director of Nurses United, refused to say how many nurses made the statement about Texas Health Presbyterian Hospital, but insisted they were in a position to know what happened.

A total of 76 people at the hospital might have been exposed to Duncan, and all are being monitored for fever and other symptoms daily, Frieden said. Nurse Nina Pham contracted the virus while caring for Duncan. Health officials are monitoring 48 others who had some contact with Duncan before he was admitted the hospital where he died.

Frieden said some of the world's leading experts on how to treat Ebola and protect health care workers are in the new response team. They will review issues including how isolation rooms are laid out, what protective equipment health workers use, waste management and decontamination.

In Europe, the WHO said the death rate in the outbreak has risen to 70 percent as it has killed nearly 4,500 people, most of them in West Africa. The previous mortality rate was about 50 percent.

Pham, 26, became the first person to contract the disease on U.S. soil as she cared for Duncan. She released a statement Tuesday through Texas Health Presbyterian Hospital saying she was "doing well," and the hospital listed her in good condition. She has received a plasma transfusion from a doctor who recovered from the virus, and the hospital CEO said medical staff members remain hopeful about her condition.

Pham was in Duncan's room often, from the day he was placed in intensive care until the day before he died.

She and other health care workers wore protective gear, including gowns, gloves, masks and face shields — and sometimes full-body suits — when caring for Duncan. Health officials have said there was a breach in protocol that led to the infections, but they don't know where the breakdown occurred.

Among the changes announced Tuesday by Frieden was a plan to limit the number of health care workers who care for Ebola patients so they "can become more familiar and more systematic in how they put on and take off protective equipment, and they can become more comfortable in a healthy way with providing care in the isolation unit."

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Associated Press Chief Medical Writer Marilynn Marchione and AP reporters Martha Mendoza, Maud Beelman, Matt Sedensky and Alex Sanz in Dallas contributed to this report.

Read more from HuffPost on Ebola:
The Uncensored Reality Of Covering Ebola As A Journalist
All The Times The World Tried To Warn Us
Why We Won't Have An Ebola Vaccine For Years
The Most Destructive Ebola Myths, Debunked
What Actually Happens When A Person Is Infected

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