This study comprises some 70 cases of tsutsugamushi fever. Most of the patients resided for a period of weeks to several months in an area which has proved endemic for the disease. This paper represents our observations and the experimentation and study possible with limited equipment while working under field conditions. Should this information serve to stimulate further laboratory experimentation and give the profession a better conception of the military and economic importance of this disease, we would feel our efforts well spent.
Until recently the condition about to be considered has not been given the space it deserves in American medical textbooks, owing in part to our lack of interest from the economic standpoint in many of the tropical and subtropical countries. The advent of World War II has, however, changed the picture entirely. We now find not only the men of allied armed forces but our own men