You Do Need power plug adapter while traveling from Costa Rica to Burkina Faso.

Here is Why You Need An Adapter

The outlet and plug type used in Burkina Faso are C and E and in Costa Rica are A and B. This is how they look like.

Costa Rica

In Costa Rica, outlets of type A and B are in use.

Type A

Type B

Burkina Faso

In Burkina Faso, outlets of type C and E are in use.

Type C

Type E