Table 1. Origin of Buruli ulcer cases, 1997–2001^a.

Region	1997	1998	1999	2000	2001	Total (%)
Zou	224	229	221	196	195	1,065 (66.3)
Oueme	35	45	90	46	64	280 (17.4)
Atlantique	11	26	35	25	55	152 (9.5)
Mono	17	42	26	6	6	97 (6.0)
Other	3	2	2	3	2	12 (0.8)
Total	290	344	374	276	322	1,606

^aOf cases in which region of origin was known. A total of 24 cases in the 5-year period were unknown.