GEO 210 Lecture Notes - Lecture 14: Ecological Pyramid, Yellow Fever, Malaria

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First mention in chinese canon of medicine around 1700bc. Average the disease infects about 300m per year. 600 to 1000k of them will die (most preventable) The wall street journal reported that malaria was responsible for half of human deaths since the stone age. Canada 2001-2013 3 deaths (all travelers) 1897 1m plus die from malaria. Was known to be caused by microscopic parasite found in blood: didn"t know how it was being transmitted. Dr. ronald ross with observation: patients in his field hospital who did not have malaria were more likely to develop the disease in open wards (no netting or screens) than in closed wards. Test of hypothesis that mosquitoes in open ward were spreading disease from patients who did not have the disease. Ross compared the blood of mosquitoes that had fed on malaria patients with mosquitoes not fed on infected patients. Found parasites only in blood of infected drinking mosquitoes.

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