West Africa’s disease environment of the eighteenth and nineteenth centuries was decidedly hazardous to the health of Europeans who ventured there. Comtemporary observers reported die-offs of white troops reaching the 80 percent mark annually, while the loss of one half of a ship’s company on the coast was not all that unusual. Philip Curtin has calculated that on the average England’s loss of white troops ranged between 300-700 per 1,000 mean strength per annum with his most recent word on the subject placing the overall white death toll at about half of the white soldiers, government officials, and civilian personnel who reached West African shores. K. G. Davies, on the other hand, would have the “risks of the African station” even higher with an individual facing “three chances in five of being dead within a year.”
West African natives by contrast positively thrived amidst European death. Again referring to Curtin’s data, the biggest killer of whites by far was “fever.” The fevers of Sierra Leone, for example, dispatched white troops at the rate of 410.2 per thousand per annum during the years 1819-1836, yet caused the death of only 2.5 African troops per thousand per annum. A similar differential experience with fevers occurred throughout West Africa—an experience which Professor Curtin has suggested constituted a crucial reason for the Atlantic slave traded Europeans would have preferred to locate plantations in tropical Africa close to a seemingly inexhaustible source of cheap labor, but they were persuaded by the lethal nature of West African fevers to locate those plantations instead in the more salubrious New World. Put plainly, they found the expense of transporting African workers across the Atlantic eminently preferable to challenging the odds against their own survival in Africa.