-27- 



Barksdale in Edwards County. The field work was conducted in 

 cooperation with Drs. D. G. Young, G. B. Fairchild, and R. G. Endris, 

 all from the University of Florida, Gainesville, FL. A second survey 

 trip was taken in early fall of 1983 (19-30 September), the principal 

 field study site being in and around the rural community of D'Hanis in 

 Medina County. Secondary sites included Garner State Park, the Romer 

 Ranch south of Devine in Medina County, and two sites within the city 

 limits of San Antonio in Bexar County. During the second trip the 

 able assistance of Mr. T. Long, zoonotic technician, Region 9, Texas 

 State Health Department, was greatly appreciated. The objectives 

 were to 



1. conduct a survey of potential vector sand flies in the 

 vicinities of recent human case sites of leishmaniasis in Texas (A 

 case site, as used herein, is defined as the home environs of a 

 confirmed leishmaniasis patient, or localities where that individual 

 camped or otherwise visited within three months prior to the onset of 

 disease symptoms.); and 



2. study the field biology of Lu. diabolica and col lect wild 

 stock for a laboratory colony. 



Human Case Histories 



Eight autochthonous human cases of cutaneous leishmaniasis have 

 been reported in south central Texas, four of which have occurred since 

 1980 (Gustafson et ah, 1984) (Fig. 2-1). These latter four were the 

 only cases investigated during this study and are described below. Por- 

 tions of the following unpublished case histories were graciously provided 

 by Dr. T. Gustafson, the investigating Texas State epidemiologist. The 



