Authorities in Rwanda say they've closed their border with Congo.
It comes after Congolese city of Goma confirmed its second case of Ebola fever earlier this week.
The border between Goma and its nearest town of Gisenyi has been shut for everyone except Congolese citizens who are leaving Rwanda.
However authorities in Congo are against the decision, saying it's against what the World Health Organization (WHO) has advised the two African countries to do.