| skin and serum reactivity among humans to histoplasmin in the vicinity of a natural focus of histoplasma capsulatum var. duboisii. | the epidemiology of histoplasmosis duboisii (african histoplasmosis) is not well understood. the present study was carried out to investigate the prevalence of skin sensitivity and to determine by immunodiffusion the presence of antibodies among humans to histoplasmin around a recently discovered natural focus of histoplasma capsulatum var. duboisii in a bat cave in ogbunike in the anambra state of nigeria. out of the 40 subjects, all young adults aged 18-30 years, comprising cave guides, trader ... | 1996 | 9011827 |