Results: This investigation confirmed the epidemic outbreak in the health area. A total of 20 cases recorded between January 22 and February 11, 2023; 6 cases confirmed by biology (IGM+) and 14 cases by epidemiological link, 40% resided in the Bla Djourala district, the sex ratio (M/F) was 1.2, 75% of the cases were 5 years old and over, all the cases (100% ) presented with the rash and fever, the average age was around 7 years and the attack rate was 0.15%. We ensured the response carried out concerned children from 9 months to 14 years old and made it possible to obtain 98.54% coverage