The Etiology of Typhus Exanthematicus in Mexico (Tabardillo)

Abstract

In a preliminary report1 we presented an outline of the results of our investigations on typhus exanthematicus in Mexico. It is our purpose, in this communication, to state the facts which led us to our conclusions as well as to bring forward other phases of the work not mentioned in the first paper. The studies here reported were made in Matehuala, in Central Mexico, during the epidemic of typhus fever which prevailed throughout the winter, or dry months, of 1915-1916. An expedition consisting of the authors was made possible through the generosity of the board of directors of Mount Sinai Hospital. A complete laboratory equipment including animals for experimental purposes was taken with us in a special car. We wish to thank Dr. F. S. Mandlebaum, pathologist to the hospital, for his great aid in this direction. These investigations could not have been made without the assistance of the American