NEW : The WHO describes the Ebola outbreak as a ` ` dire situation '' Patient is a US citizen who contracted Ebola in Sierra Leone , State Department says . Emory says an air ambulance will transport an Ebola patient to Atlanta . The patient will be brought to a hospital isolation unit , Emory says .
NEW : The WHO describes the Ebola outbreak as a `` dire emergency '' Patient is a U.S. citizen who got Ebola in Sierra Leone , State Department says . Emory says an air ambulance will transport an Ebola patient to Atlanta . The patient will be brought to a hospital isolation unit , Emory says .