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Further Experiments in the Etiology of Dengue Fever

Published online by Cambridge University Press:  15 May 2009

J. Burton Cleland  and
Burton Bradley
J. Burton Cleland
Affiliation:
Principal Microbiologist, Microbiological Laboratory, Department of Public Health, Sydney
Burton Bradley
Affiliation:
Director Laboratory of Microbiology and Pathology, Brisbane; late Assistant Microbiologist, Department of Public Health, Sydney, and Hon. Pathologist, Royal North Shore Hospital of Sydney.
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The present figures show that the virus may be present in the blood as early as 18 hours and as late as 90 hours after the onset. It was not found in the blood 130 hours and 190 hours after the onset.

The virus outside the body has been found alive, if kept reasonably cool, in several instances up to 48 hours, and in one instance after 99 hours.

It is not possible from this series to draw deductions from the negative cases on this question.

Several mosquito experiments in this series have not therefore added to our previous knowledge, but the one satisfactory experiment with Culex fatigans tends to support the view we hold that this species is probably not a vector of the disease. The results previously published by us support the opinion of Bancroft (5) and show clearly that, whether or not C. fatigans may also play a part in Australia, Stegomyia fasciata is capable of spreading the infection of dengu.

Type
Research Article
Information
Journal of Hygiene , Volume 18 , Issue 3 , October 1919 , pp. 217 - 254
Copyright
Copyright © Cambridge University Press 1919

References

(1)Cleland, , Bradley, and MacDonald, (2. IX. 1916). On the Transmission of Australian Dengue by the Mosquito Stegomyia fasciata. Med. Journ. of Australia.CrossRefGoogle Scholar
(2)Cleland, , Bradley, and MacDonald, (5. II. 1918). Dengue Fever in Australia. Journ. of Hyg. xvi. 317–418, 9 charts; also in Seventh Report of the Microbiological Laboratory of the Dept. of Public Health, N.S.W..Google Scholar
(3)Graham, (1. VII. 1903). The Dengue; A Study of its Pathology and Model of Propagation. Journ. of Trop. Med. vi. p. 209.Google Scholar
(4)Ashburn, and Craig, (1907). Experimental investigations regarding the Aetiology of Dengue Fever. Philipp. Journ. of. Sc. ii. 93.Google Scholar
(5)Bancroft, (1. 1906). On the Aetiology of Dengue Fever. Aust. Med. Gaz. p. 17.Google Scholar