Mycobacterium ulcerans disease (Buruli ulcer) in a rural hospital in Bas-Congo, Democratic Republic of Congo, 2002-2004.

Buruli ulcer (BU), which is caused by Mycobacterium ulcerans, is an important disabling skin disease. Its prevalence is highest in west and central Africa. We report an apparent resurgence of BU in the Bas-Congo Province, Democratic Republic of Congo.