ANOTHER U.S. DOCTOR IN LIBERIA BECOMES EBOLA VICTIM

A U.S. physician working in Liberia has tested positive for Ebola, the missionary organization SIM USA announced Tuesday.

The unnamed missionary doctor was treating obstetrics patients at the organization's ELWA hospital in Monrovia, Liberia, and was not working with Ebola patients in the facility's isolation unit, which is separate from the main hospital, according to a news release from the organization. He isolated himself immediately upon developing symptoms and has been transferred to the Ebola isolation unit.

The doctor is the fourth American to be diagnosed with the hemorrhagic disease that has killed more than half the people who have become infected during the current outbreak in West Africa. Another physician, Kent Brantly, and a missionary volunteer, Nancy Writebol, who also were working at ELWA hospital, were treated with an experimental medication and brought back to Emory University Hospital in Atlanta, where both recovered.