. Flies in relation to disease: bloodsucking flies. Flies; Flies as carriers of disease; Diptera. XI] CAUSAL AGENT 193 the form of small hyaline bodies occurring in the red cells, which he considered to be related to Babesia. In addition, he fed Culex fatigans on infected patients and claimed to have found his parasites in the insects up to the fifth day after feeding, without, however, observing any signs of their develop- ment. Nevertheless the salivary glands were said to contain spores from two days up to a month after the mosquito had. Fig. 52. The distribution of Culex fatigans. fed on i
. Flies in relation to disease: bloodsucking flies. Flies; Flies as carriers of disease; Diptera. XI] CAUSAL AGENT 193 the form of small hyaline bodies occurring in the red cells, which he considered to be related to Babesia. In addition, he fed Culex fatigans on infected patients and claimed to have found his parasites in the insects up to the fifth day after feeding, without, however, observing any signs of their develop- ment. Nevertheless the salivary glands were said to contain spores from two days up to a month after the mosquito had. Fig. 52. The distribution of Culex fatigans. fed on infected blood. A typical attack of dengue was pro- duced in a healthy person by the injection of the salivary glands of a mosquito, that had fed on an infected patient 24 hours previously. Although Graham's work on the transmission of dengue by Culex fatigans has been confirmed, the organism which he described has never been observed by any subsequent investi- gators, but from the nature of the disease there seems httle doubt that it is caused by some protozoal parasite living in the blood. Ashburn and Craig have studied the aetiology H. B. F. ^â i. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hindle, Edward, 1886-. Cambridge, University Press
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectdiptera
