Officials at the University of Kansas Hospital say a man being treated in isolation is considered at low to moderate risk of having contracted the Ebola virus.

Chief medical officer Dr. Lee Norman says the patient came to the hospital Monday morning with significant weakness and diarrhea. The man also said he had previously had a fever.

But Norman also said it was encouraging that the man did not have a fever nor internal bleeding — two symptoms of Ebola. Norman said the man was being rehydrated and regaining strength.

The man worked recently as a medic on a commercial ship off Africa’s west coast. Norman said he had been exposed to typhoid, but that it’s unknown if he was also exposed to Ebola.

Norman said results of blood tests are expected Tuesday.