REUTERS/Frederick Murphy/CDC/Handout
Some of the ultrastructural morphology displayed by an Ebola virus virion is revealed in this undated handout colorized transmission electron micrograph (TEM) obtained by Reuters August 1, 2014.
Officials with the Centers for Disease Control and Prevention made the announcement Monday.
The patient is being treated, but details have not yet been released and it's not clear whether or not this is a confirmed case of the virus that has killed thousands in West Africa.
Many more common diseases have symptoms that look similar to Ebola.
In August, a widely publicized "possible" Ebola case in New York City was quickly forgotten after the patient in question tested negative.
The death toll for Ebola has passed 2,000.
West African countries are trying desperately to contain the disease, but it's still spreading. CDC officials have said the outbreak is "spiraling out of control."
Ebola begins with flu-like symptoms, but then escalates into vomiting, diarrhea, and often bleeding.