CHAPTER XLVITI 



TYPHUS FEVEE, TEENCH FEVEK, KOOKY MOUNTAIN SPOTTED 

 FEVEE. NOTES ON DELOUSING AND A CONSIDEEATION OF THE 

 SO-CALLED EICKETTSIA BODIES. 



IN this chapter we have brought together a group of diseases 

 which are insect borne and in which the etiological factor at the 

 present time is uncertain. We have attached to the end of the 

 chapter a short resume of Rickettsia bodies, appearances to which 

 allusion is made in consideration of all the diseases here dealt with. 

 The chapter has not been introduced with these Rickettsia bodies 

 because we do not feel at the present time that their relationship 

 to the diseases or even their positive interpretation as living organ- 

 isms has been fully established. The evidence which connects them 

 with the diseases in question, however, is growing so important that 

 general information as to their nature and appearance cannot be 

 ignored. In reading the chapters, if the reader finds reference to 

 Rickettsia bodies in the sections on the diseases, he is referred for 

 further information to the section on Rickettsia at the end of the 

 chapter. 



TYPHUS FEVEE 



Typhus fever is an infectious disease which is characterized by 

 an incubation time of five days or more, high temperature, and a 

 petechial rash. It has been characterized as peculiarly a disease 

 of filth and has epidemically disappeared in most of the civilized 

 countries, although it is still endemic in certain parts of Europe, 

 North and South America, and occurs epidemically in Mexico under 

 the name of Tabardillo. In New York it has recently been found 

 to exist not infrequently. It was described as a new clinical entity 

 by Brill, and has been spoken, of as Brill 's disease, but the work of 

 Anderson and Goldberger has shown that Brill's disease is identical 

 with typhus fever. 



During the present war great epidemics occurred in the countries 

 of Eastern Europe, an epidemic of great destructiveness sweeping 



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