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The instalment of the World-Atlas of Epidemic Diseases under review is of special interest for students of tropical diseases, since, besides dealing with some disease conditions in Europe (paratyphoid A; diphtheria; trench fever) and with the population distribution in the Mediterranean area and in Africa in 1950, it devotes attention to (a) yellow fever in Africa, 19391952; (b) dengue epidemics in the Mediterranean area (18001950) and the distribution of its vector Aedes aegypti; (c) geographical distribution of leishmaniasis and phlebotomus vectors in Africa, 19061952; and (d) in a particularly well documented article accompanying the corresponding map with the distribution of filarial infections (filariasis and dracunculosis) in man in Africa with special reference to the position since 1939.
Discussing the incidence and epidemiology of yellow fever, Höring & Höring come to the conclusions that the Central-African jungle is the original home of this virus infection and that the disease was imported from Africa through slave transports into Central America and only afterwards became entrenched among the monkeys of the South American equatorial forest regions.
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