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The Culex pipiens fatigans problem in South-East Asia: With special reference to urbanization*

By D. Singh


In South-East Asia in recent years urbanization has proceeded rapidly. Because of limited financial resources it has seldom been possible to provide sufficient sanitation; this has led to conditions favourable to the breeding of Culex pipiens fatigans. The density of C. p. fatigans is higher in urban areas than in rural ones. Differences in infection and infectivity rates in C. p. fatigans seem to be due to differences in infection rates in the human population rather than to differences in the life-span of the mosquito. Precipitin tests have shown that the species feeds predominantly on man. It breeds in almost any type of stagnant water with organic contamination. Filariasis problems in India have been classified according to the duration of established transmission

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