According to officials, a worker at the Texas hospital that cared for the United States' first Ebola patient has tested positive for the disease.

In a statement released Sunday morning, the state's health department said the employee at Texas Health Presbyterian Hospital in Dallas underwent preliminary testing after running a low grade fever Friday night. The tests results came back positive late Saturday.

The unnamed worker—who CNN identifies as a female nurse—is currently isolated at the hospital and in stable condition.

At a press conference on Sunday, officials said the new victim wore full protective equipment while treating Thomas Eric Duncan, the man who was diagnosed with the U.S.' first case of Ebola after traveling in Liberia last month. On Wednesday, Duncan died.

Confirmatory test results are expected to be released later today by the Center for Disease Control. If confirmed, this would be the first known case of Ebola transmission and the second case of Ebola overall in the United States.

[Image via AP]