Was the bush in East Africa infested with tsetse-fly before the herders arrived?
From the newscientist.com
It is caused by the Trypanosoma parasite, which is transmitted by the tsetse fly.
From the sciencedaily.com
Tsetse fly populations now prevented any significant human settlement in the area.
From the en.wikipedia.org
Other forms of human trypanosomiasis also exist but are not transmitted by tsetse.
From the en.wikipedia.org
One early technique involved slaughtering all the wild animals tsetse fed on.
From the en.wikipedia.org
Tsetse are also attracted to large dark colors like the hides of cow and buffaloes.
From the en.wikipedia.org
The parasite responsible for sleeping sickness can be transmitted by the tsetse fly.
From the sciencedaily.com
It's hot-84 degrees and rising at 10 a.m.-and the tsetse flies are on to us.
From the forbes.com
It is caused by the protozoan, Trypanosoma brucei, and transmitted by the tsetse fly.
From the sciencedaily.com
More examples
Tsetse fly: bloodsucking African fly; transmits sleeping sickness etc.
Tsetse , sometimes spelled tzetze and also known as tik-tik flies, are large biting flies that inhabit much of mid-continental Africa between the Sahara and the Kalahari deserts. ...
Any fly of the genus Glossina, native to Africa, that feeds on human and animal blood; known primarily as a carrier of parasitic trypanosomes
(pronounced /ts/e-/ts/e, teet-SEE, or set-see) are large biting flies from Africa which live by feeding on the blood of vertebrate animals. Tsetse include all the species in the genus Glossina, which are generally placed in their own family, Glossinidae.