Another challenge in trying to contain Ebola is the very strong cultural beliefs in that area of Africa.
The No. 1 contamination risk is touching the body around the time someone has died from Ebola.
"They do rituals before they bury the body that involves washing the bodies and even, sometimes, sleeping with them, the dead person."
So after someone dies at a treatment centre, the Doctors Without Borders staff bring the family to the centre and do what they call a safe burial.
"We wash the body and we put them in a body bag, but with the zipper open so they can see the face, and we bring the body to the village," in conjunction with the Guinea Red Cross, Forget says.
"People can still do a burial process but in a safe way so they don't touch the body … they can still pray and perform ceremonies but without touching the body.