The patient recently returned from Liberia, where he was working on the Ebola effort.
Officials at the UConn Health Center activated their Ebola protocols after a man who had recently returned from Liberia came to the hospital feeling ill. Late Wednesday, a test result came back negative for Ebola, but the patient tested positive for malaria.
Earlier, officials said that the patient was doing well, and was at "very low risk" of having contracted Ebola. He was nevertheless tested for it and other ailments.
The patient, who the center did not identify, arrived in Liberia in November to work on the Ebola effort. He did not have direct patient contact, and returned on April 30.
"The patient is at very low risk for Ebola virus. In fact, he probably has another illness or infection," said Paul Skolnik, the chief of medicine at UConn Health Center earlier on Wednesday. "But, out of an abundance of caution, we activated our Ebola virus disease protocol."
Skolnik said the patient came to the emergency department Tuesday night with general symptoms of fever and muscle aches.
Watch a video below of Skolnik describing the patient's condition: