At least six Americans were exposed to the Ebola virus in the Democratic Republic of Congo, sources with international aid organizations confirmed to CBS News. It remains unclear if any have been infected.
Three of the individuals faced high-risk contact, and one is showing symptoms. Their current location in Congo is unknown.
The World Health Organization has declared the outbreak a public health emergency of international concern. Over 80 suspected deaths and more than 300 suspected cases have been reported in Congo, with eight lab-confirmed cases this year.
The CDC stated it is supporting the safe withdrawal of affected Americans but emphasized the risk to the U.S. public remains low. Travel advisories are in place for Congo and Uganda.
Ebola spreads through direct contact with bodily fluids, not through casual contact or air. This is Congo's 17th outbreak since 1976.