Further eradication of tsetse in the Chad and Gongola river systems in north-eastern Nigeria.
Abstract
During the years 1963-70, further progress was made in eradicating tsetse (Glossina tachinoides, G. morsitans, G. palpalis) from parts of north-eastern Nigeria through the application of persistent insecticide (generally DDT) to fly resting sites. Further modifications to the spraying technique are described. Insecticide barriers have been successful in protecting sprayed areas, and periodic checks indicate that all the country reclaimed is free from fly. A total of 10644 square miles (27570 km2) has been reclaimed.