Is sleeping sickness a mosquito-borne disease?

No, sleeping sickness, or African trypanosomiasis, is not a mosquito-borne disease. It is transmitted by the bite of the tsetse fly, which is primarily found in sub-Saharan Africa. The disease is caused by parasites of the Trypanosoma genus, and it affects both humans and animals. Mosquitoes are not involved in the transmission of this particular illness.