The next few weeks will really tell if this outbreak is going to expand to urban areas or if we're going to be able to keep it under control. Doctors report there are three separate chains of transmission and each one has the potential to expand if it's not controlled. One focus is on the busy trading hub on the Congo River.
Five health care workers have also died, raising fears the virus could spread out of control. The UK announced it will pledge 5 million pounds in aid and will also help develop a vaccine.