[Status of human African trypanosomiasis in the Nola-Salo-Bilolo in the Central African Republic in 2005].

In November-December 2005, the technical staff of the Organisation for Coordination of the Control of Endemic Diseases in Central Africa (OCEAC) and the National Program for Control of Human African Trypanosomiasis (PNLTHA) undertook screening for human African trypanosomiasis in the historical focus of Nola-Salo-Biolo in Central Africa. A total of 31 new cases of typanosomiasis were detected for a prevalence of 0.44%. This study also provided insight into the limits of this old focus and showed that circulation of the parasite is still heavy. The endemia of sleeping sickness has now been contained in Nola-Salo-Bilolo but maintaining control measures is essential to preventing a potentially major recrudescence.