Video. Human African Trypanosomiasis, also known as sleeping sickness is a devastating parasitic disease. It is a neglected tropical disease affecting communities in Africa. In this video we take a look at the disease, how it presents and and ways to control it.
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Sleeping sickness is controlled by case detection and treatment but this often only reaches less than 75% of the population. Vector control is capable of completely interrupting HAT transmission but is not used because of expense. We conducted a full scale field trial of a refined vector control tec...hnology. From preliminary trials we determined the number of insecticidal tiny targets required to control tsetse populations by more than 90%. We then carried out a full scale, 500 km2 field trial covering two HAT foci in Northern Uganda (overall target density 5.7/km2). In 12 months tsetse populations declined by more than 90%. A mathematical model suggested that a 72% reduction in tsetse population is required to stop transmission in those settings. The Ugandan census suggests population density in the HAT foci is approximately 500 per km2. The estimated cost for a single round of active case detection (excluding treatment), covering 80% of the population, is US$433,333 (WHO figures). One year of vector control organised within country, which can completely stop HAT transmission, would cost US$42,700. The case for adding this new method of vector control to case detection and treatment is strong. We outline how such a component could be organised.
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Lesson on African Trypanosomiasis (African Sleeping Sickness): Causes, Symptoms and Treatment. African Trypanosomiasis is caused by parasitic protozoa from the genus trypanosoma. Trypanosoma protozoa are carried in the tsetse fly, and when a person is bitten by a tsetse fly, trypomastigotes ...enter the bloodstream of the infected individual. Trypomastigotes also enter lymphatic system and spinal fluid, where they multiply by binary fission. Systems affected in African Trypanosomiasis include the skin, lymphatic system and central nervous system.
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Human African trypanosomiasis (HAT), or sleeping sickness, is caused by trypanosome parasites that are transmitted by tsetse flies. HAT is found only in sub-Saharan Africa. Two subspecies of Trypanosoma brucei cause disease: T. b. gambiense in West and Central Africa, and T. b. rhodesiense in East A...frica.
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Front. Trop. Dis. , 09 May 2023 Sec. Neglected Tropical Diseases Volume 4 - 2023 | https://doi.org/10.3389/fitd.2023.1087003
DNDi is now striving to make fexinidazole available to the majority of people who have T.b. gambiense sleeping sickness. We are supporting a three-year access and pharmacovigilance study that began in 2020 and have so far carried out in-country training of relevant staff in 250 hospitals and... health centres in T.b. gambiense-endemic countries; and updated national treatment and pharmacovigilance guidelines in Angola, Central African Republic, the Democratic Republic of Congo, Equatorial Guinea, Guinea, and Chad.
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This was a Phase 3, multi-center, randomized, open-label, parallel-group, active control study where 273 male and female patients with first stage Trypanosoma brucei gambiense HAT were treated at six sites: one trypanosomiasis reference center in Angola, one hospital in South Sudan, and four hospita...ls in the Democratic Republic of the Congo between August 2005 and September 2009 to support the registration of pafuramidine for treatment of first stage HAT in collaboration with the United States Food and Drug Administration. Patients were treated with either 100 mg of pafuramidine orally twice a day for 10 days or 4 mg/kg pentamidine intramuscularly once daily for 7 days to assess the efficacy and safety of pafuramidine versus pentamidine. Pregnant and lactating women as well as adolescents were included.
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