The patient was admitted to a hospital in Enkoping before being transferred to nearby Uppsala University Hospital, where the emergency clinic has been closed.
A suspected case of the deadly Ebola virus has been reported by a Swedish hospital, officials said Friday, adding the patient has been isolated.
The individual is not confirmed to have Ebola, and other diagnoses are possible.
"Test results will likely be ready some time tonight".
The medic, who was not originally showing any signs of Ebola, is expected to be in isolation at a hospital in Nebraska for another week.
Uppsala chief of medicine Mikael Köhler told regional newspaper UNT that the patient had returned to Sweden from a trip to Burundi among other places three weeks ago, but was not understood to have visited any areas affected by active Ebola outbreaks. Ebola is one of the world's most risky diseases and killed over 11,000 people during an epidemic in Africa that started in 2014., while an outbreak is still active in the Democratic Republic of Congo (DRC). An outbreak in west Africa between 2014 and 2016 killed an estimated 11,325 people, according to the World Health Organization.
The highly contagious Ebola virus causes a violent hemorrhagic fever, accompanied by vomiting, diarrhea, internal and external bleeding.