21. His long term aim to reach Tsetse fly. 22. Larger flies such as tsetse fly and screwworm cause significant economic harm to cattle. 23. Sleeping sickness is fatal unless treated and is spread in humans by the tsetse fly. 24. Most tsetse flies are physically very tough. 25. Sleeping sickness begins with a tsetse bite leading to an inoculation in the subcutaneous tissue. 26. This ritual consisted of mothers killing the tsetse flies and sprinkling them on horned melon. 27. Sekeletu arranged that the survivors'party be guided into tsetse fly country and abandoned. 28. From June to December 1923, he was attached to the Nigerian Tsetse Investigation Staff. 29. Local workers were employed to catch tsetse fly, using black umbrellas to attract them. 30. The animals that Tilley pursues at night have lived with tsetse flies for millions of years.
