Tsetse and Trypanosomiasis in East and Central Africa

Disease, we have argued, influenced patterns of colonization, especially in West Africa, the Americas, and Australia (Chapter 2). In turn, imperial transport routes facilitated the spread of certain diseases, such as bubonic plague. This chapter expands our discussion of environmentally related diseases by focusing on trypanosomiasis, carried by tsetse fly, in East and Central Africa. Unlike plague, this disease of humans and livestock was endemic and restricted to particular ecological zones in Africa. But as in the case of plague, the changing incidence of trypanosomiasis was at least in part related to imperialism and colonial intrusion in Africa. Coastal East Africa presented some of the same barriers to colonization as West Africa. Portugal maintained a foothold in South-East Africa for centuries, and its agents expanded briefly onto the Zimbabwean plateau in the seventeenth century, but could not command the interior. Had these early incursions been more successful, southern Africa may have been colonized from the north, rather than by the Dutch and British from the south. Parts of East Africa were a source of slaves and ivory in the eighteenth and early nineteenth centuries. The trading routes, commanded by Arab and Swahili African networks, as well as Afro-Portuguese further south, were linked with the Middle East and the Indian Ocean. In the early decades of the nineteenth century, slave-holding expanded within enclaves of East Africa, such as the clove plantations of Zanzibar. When Britain attempted to abolish the slave trade in the early nineteenth century, and policed the West African coast, East and Central African sources briefly became more important for the Atlantic slave trade. African slaves from these areas were taken to Latin America and the Spanish Caribbean. Britain did not have the same intensity of contact with East Africa as with West and southern Africa until the late nineteenth century. There was no major natural resource that commanded a market in Europe and British traders had limited involvement in these slave markets. But between the 1880s and 1910s, most of East and Central Africa was taken under colonial rule, sometimes initially as protectorates: by Britain in Kenya and Uganda; Germany in Tanzania; Rhodes’s British South Africa Company in Zimbabwe, Zambia, and Malawi; and by King Leopold of Belgium in the Congo.