She was treated at a hospital near Paris.
Separately Saturday, a hospital in the German city of Hamburg said it has successfully treated and discharged a Senegalese scientist who contracted Ebola in Sierra Leone.
The World Health Organization says the current outbreak of the disease — the worst on record — has infected more than 7,400 people in Liberia, Sierra Leone and Guinea, including hundreds of doctors, nurses and other health workers. More than 3,400 of the victims have died.
In the United States, federal health officials in hazmat suits escorted two passengers off of a United Airlines flight that landed in New Jersey Saturday after at least one of them exhibited symptons that may have been consistent with Ebola.
Officials later said they do not believe the sick passengers, a vomitting man and his daughter who were believed to have come from Liberia, were infected with the Ebola virus.
The flight crew and remaining passengers were quarantined for a short time before being released and permitted to go through U.S. customs, according to the Port Authority of New York and New Jersey.
The hospital in Dallas, Texas, treating a Liberian national who had traveled from Liberia to the U.S. with Ebola said Saturday his condition had worsened from serious to critical.
The director of the U.S. Centers for Disease Control and Prevention, Tom Frieden, said none of the nine people who had direct contact with the Dallas patient has shown symptoms.
He said Saturday they are being monitored along with another 40 people who may have had contact with him. He said the CDC has had inquiries about 100 potential Ebola cases in the U.S. since the case in Dallas was confirmed, and none of them has been positive for Ebola.
Meanwhile, an infected U.S. cameraman working for NBC News in Liberia will arrive in the U.S. Monday. Ashoka Mukpo's father says his son will be treated at a facility in Omaha, Nebraska.
The Pentagon said it could deploy as many as 4,000 troops to help contain the Ebola outbreak in West Africa. U.S. President Barack Obama said initially that 3,000 would go to fight the disease. About 200 U.S. soldiers are already in Liberia, setting up headquarters for the U.S. mission, which will train health care workers and set up medical facilities.
The Ebola virus is spread by direct contact with the bodily fluids of infected patients. It causes vomiting, diarrhea and in the worst cases, uncontrollable bleeding.
There is no known cure, but an American doctor diagnosed with the virus was found to be Ebola-free after taking an experimental drug in August.