You Do Need power plug adapter while traveling from Netherlands to Burundi.

Here is Why You Need An Adapter

The outlet and plug type used in Burundi are C and E and in Netherlands are C and F. This is how they look like.

Netherlands

In Netherlands, outlets of type C and F are in use.

Type C

Type F

Burundi

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

Type C

Type E