Table 1. Temporal and geographic distribution of T. b. rhodesiense isolates and clones.

Year of isolation	geographic location	Isolate lab. No.	Comments	Lab No. of derivative clone
1972	Busoga, Uganda	KETRI 2537	Used in Schmidt and Sayer, (1982); five passagessince isolation, well characterised.	KETRI 3741
1989	Busia, Kenya	KETRI 3199	One passage since isolation	KETRI 3801
1989	Bukhayo West, Kenya	KETRI 3205	Two passages since isolation	KETRI 3804
2003	Tororo, Uganda	KETRI 3928	One passage since isolation	KETRI 3928