Fact sheets for the Ebola virus are distributed during an awareness campaign in Lagos, Nigeria, Friday, Aug. 15, 2014

Authorities in Liberia opened a new center to treat Ebola patients in the capital on Saturday after the existing one became overwhelmed with patients, underscoring that the health crisis is far from under control.The first center in Monrovia was only meant to treat 25 people but had about 80 patients as of Friday, said Assistant Health Minister Tolbert Nyenswah. The new center will have 120 beds but may eventually be tripled in size because of the ongoing crisis.Isolating Ebola patients is critical to slowing the spread of the disease, as sick people can transmit it through their bodily fluids such as blood, sweat or urine. There is no licensed treatment or vaccine for the disease, which has killed at least half of its victims this year.Even as authorities rush to put patients in isolation, the UN health agency has warned that the Ebola outbreak in West Africa may last another six months. At least 1,145 people have died across Liberia, Sierra Leone, Guinea and Nigeria, and that may "vastly underestimate the magnitude of the outbreak," the World Health Organization says.New figures released on Friday showed that Liberia now has recorded more deaths 413 than any of the other affected countries.Health workers treating Ebola patients on the front lines of the crisis have borne the brunt of the fatalities. Sierra Leone's president, Ernest Bai Koroma, told journalists on Friday that his country has lost two top doctors and 32 nurses.

"We need specialized clinicians and expertise and that is why we are appealing to the international community for an enhanced response to our fight against the Ebola disease," he said.