Trapping the vector: community action to curb sleeping sickness in southern Sudan.

South Sudan experienced a resurgence of trypanosomiasis (sleeping sickness) in the 1990s. In 1997 in Tambura County, public health officials combined standard mass screening and treatment techniques for infected persons with an additional component-trapping the vectors of the disease. The intent of this integrated approach was to lower the number and concentration of the tsetse flies that spread the disease while reducing the level of infection in the human population to make the likelihood of transmission extremely low. Because the trapping project depends on village participation (making, setting, and maintaining the traps), village volunteers and their neighbors learned more about the causes and prevention of sleeping sickness and became much more willing to participate in serosurveys and to seek treatment.