DALLAS — The Texas Department of State Health Services said this morning that that 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 department said in the statement emailed early today and posted on its website that the worker reported a fever Tuesday and was immediate isolated at Texas Health Presbyterian Hospital. It says a preliminary Ebola test was conducted late Tuesday at a state public health lab in Austin, Texas, and confirmatory testing will be conducted at the Centers for Disease Control and Prevention in Atlanta.

The statement says the health care worker, who wasn’t identified, was interviewed to identify any contacts or potential exposures.