On the geographical distribution of some tropical diseases and their relation to physical phenomena / by R.W. Felkin.

  • Robert Felkin
Date:
1889
Catalogue details

Licence: Public Domain Mark

Credit: On the geographical distribution of some tropical diseases and their relation to physical phenomena / by R.W. Felkin. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    Geographical Distribution.—The distribution of malaria is very extensive, although the intensity of the malarial process varies in different regions. Commencing with Africa, we find that on the west coast malaria is very prevalent in the basins of the Senegal and Gambia, and on the Guinea coast from Sierra Leone to Cape Lopez, especially in the basins of the Niger and Gaboon, on the Ivory and Gold coasts, at Fernando Po, and St Thomas. It diminishes rapidly in intensity until lat. 18° S., where it disappears. On the East coast, the malarial region commences in the south at Delagoa Lay, and ex- tends northwards as far as 5° N. lat., including the islands of Zanzibar, Madagascar, Mauritius, Bourbon, and Seychelles. Areas of endemic ma'aria are also found in the lowlands of Abyssinia and in the Somali district, in the valley of the Xile, from Khartum to the Great Lakes, west of the Nile between Dongola and Khartum, and all over Tropical Central Africa, up to an altitude of 3000 feet. Egypt, Tripoli, Tunis, and Algiers are likewise affected. The malarial process is most intense upon the equatorial African coast- line until an altitude of 500 feet is reached, and it also extends in its gravest form for about 300 miles up the banks of the Zambesi, the Congo, and the Niger. Malaria is met with in Arabia, on the east coast of the Led Sea, especially on the coast of Hedjaz, and in Yemen from Jisan south to Moecha. It is also found at Muscat, on the shores of the I Vidian Gulf and its islands, and in the valleys of the Euphrates and Tigris. It also exists in Syria, especially in the damp valleys of the Lebanon, in the valley of the Jordan and along the -li- the Levant; and this malarious area extends to Asia Minor, from Adana and Tarsus to the Dardanelles, including Smyrna. The disease extends all round the Caspian Sea, overspreads 1' Beloochistan, and Afghanistan ; and is met with all over India, with the exception of places having a high altitude. Ceylon too and Burmah, Siam, Sumatra, Borneo, New Guinea, the Philippine Islands, Japan, the Andaman Islands and Australia as far BOUth as lat. 17', an- all affected. The disease also prevails in a severe form in the tropica] and Bub-tropical parts of China In Europe we may commence by tracing malaria in the steppe lands of the Caspian. It follows the course of the Volga through I.an, includes the centra] Caucasian plain, and the coun
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