The World Health Organization has declared the Ebola crisis in the Democratic Republic of Congo as an international emergency.
Health officials say the outbreak has killed more than 1,600 people so far.
They say it could spread to neighbouring countries like Uganda if it's not contained quickly.
However they have not ordered the closing of any borders.
The first case was detected in the city of Goma, which is home to more than a million people.

7 killed as 6.3 magnitude earthquake hits northern Afghanistan
Hamas hands over three more hostage bodies
Israeli strike kills one in Gaza as sides trade blame for truce violations
UK police say mass stabbing on train not terrorist incident, two arrested
