Next steps The only risk factor is travel to parts of Africa where the tsetse fly is found. All of the 31 known species and subspecies are capable of transmitting the trypanosome parasites that cause human sleeping sickness and disease in domestic animals that is known as nagana. The tsetse fly-transmitted trypanosomes cause sleeping sickness in humans and a related disease, nagana, in domestic animals in Africa. Tsetse fly, (genus Glossina), any of about two to three dozen species of bloodsucking flies in the housefly family, Muscidae (order Diptera), that occur only in Africa and transmit sleeping sickness (African trypanosomiasis) in humans and a similar disease called nagana in domestic animals. The word "tsetse" means "fly" in Tswana, and refers to all 23 species of the fly genus Glossina.Tsetse flies feed on the blood of vertebrate animals (including humans) and in doing so, transmit the sleeping sickness parasite from infected animals to uninfected ones. African trypanosomiasis, or sleeping sickness, is a neglected tropical disease caused by a parasite and spread by the tsetse fly in sub-Saharan Africa. It does not bite like the horse fly or tsetse fly in order to inject the pathogen into a person. The house fly is able to spread disease through several routes. Instead disease-causing agents are spread on its body, in its mouth parts or through its vomitus and feces. The tsetse fly can cause what is known as sleeping sickness, or what is known as African trypanosomiasis, which is a disease that can be cured, while it may be fatal if not treated, and this disease has been a health problem throughout the history of some regions Like the desert of South Africa, statistics indicate that about ten thousand people contract this disease annually, according to … Natives of sub-Saharan Africa, tsetse flies can transmit the microbe Trypanosoma when they take a blood meal. To make matters worse, several species of tsetse fly can transmit diseases. Medicine is available to treat it. Infections begin with mild to moderate symptoms like fever and body aches before moving on to serious neurological issues that include sleep disturbances (which give the disease its name). Tsetse fly What is African sleeping sickness? African sleeping sickness also called African trypanosomiasis is a parasitic disease of humans and many other animals, African sleeping sickness is caused by an insect thus making it an insect borne illness which is caused by a tsetse fly carrying the African trypanosomiasis parasites. It transmits African trypanosomiasis or sleeping sickness. It is passed on by the bite of the infected tsetse fly. The only way to prevent the disease is to avoid insect bites. The tsetse fly bite is often painful and can cause red bumps or small red ulcers at the site of the bite. Tsetse Tsetse flies are bloodthirsty. 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