The case happened in an area hundreds of kilometers from the epicenter of the outbreak.
All Americans in the areas must go to a specific airport for screening, the agency said.
The WHO says there have been 139 suspected Ebola deaths but that the risk of contracting the deadly virus outside the outbreak region in the Congo remains low.
Dr. Peter Stafford was flown with family members to a hospital in Berlin.
The outbreak of the deadly disease may be behind more than 130 deaths.
Dr. Peter Stafford was working in Congo when he contracted Ebola.
There have been at least 500 suspected cases and 131 suspected deaths associated with the outbreak, according to the World Health Organization.
The United States is preventing non-U.S. passport holders from entering the country if they were recently in central Africa.
The American was in the Democratic Republic of Congo.
The health agency said it has mobilized response efforts following an Ebola outbreak in Congo and Uganda.
The announcement of the strikes follows a May 15 operation that killed the second-in-command of ISIS globally in northeastern Nigeria.
The World Health Organization declared the virus a ‘public health emergency of international concern.’
The outbreak falls short of a ‘pandemic emergency,’ WHO said.
The U.S. president said the ISIS leader killed in the operation was identified as Abu-Bilal al-Minuki.
Officials said the agency is deploying expertise through local offices as African officials report dozens of deaths from suspected infections.
African health authorities are meeting with officials in nearby countries.
Wednesday’s ruling is the second jury verdict stemming from the fatal crash.
The recovery ends the search for two soldiers lost during an annual training in Africa.
Kenyan President William Ruto said future partnerships in Africa must be built ‘not on extraction or exploitation but on win-win engagements.’
The search operation for a second missing soldier is still ongoing, the U.S. Army said.