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Article
July 23, 1910

FURTHER INVESTIGATIONS REGARDING THE ETIOLOGY OF TABARDILLO, MEXICAN TYPHUS FEVER

Author Affiliations

CHICAGO

From the Department of Pathology of the University of Chicago and the Memorial Institute for Infectious Diseases, Chicago.

JAMA. 1910;55(4):309-311. doi:10.1001/jama.1910.04330040045015
Abstract

In a previous article1 we have reported certain experiments which indicated the rôle of the body louse (Pediculus vestamenti) in the transmission of Mexican typhus fever. Since that date we have been able to confirm the results of our first investigations, and also to obtain certain other experimental data concerning the etiology of this disease. The experiments which we wish to report at present2 relate to the hereditary transmission of the infectivity of the louse and the possible rôle of the bedbug and the flea in the transmission of typhus.

HEREDITARY TRANSMISSION OF THE INFECTIVITY OF THE LOUSE  The following experiment was undertaken with a view to determining whether the young of infected lice were themselves infected. The adult louse contains in its ovaries many mature eggs. These eggs are covered with a compact shell which we thought might prove impermeable to micro-organisms. Hence it was decided to

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