Ebola in the USA: A Sencond Dallas Health Care Worker Tests Positive

"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.

"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.

CDC Director Tom Frieden told Fox News Megan Kelly last night "We look at what happens and we adjust as we need to".