[An intradermal test with histoplasmin and paracoccidioidin in 2 regions of Rio Grande do Sul].

From August to October 1992 a study of prevalence of cutaneous positivity to histoplasmin and paracoccidioidin was carried out in the cities of Cachoeira do Sul (Valley of Jacuí River) and Santo Angelo (western hillside of the PlateAn), Rio Grande do Sul, Brazil. Skin tests were made in 193 soldiers from Cachoeira do Sul and 161 soldiers from Santo Angelo, both groups of 17 to 19 years of age. In Cachoeira do Sul the prevalence of positive tests to histoplasmin was 89% and to paracoccidioidin 82%. In Santo Angelo 48% of the intradermical reactions were positive to histoplasmin and 39% to paracoccidioidin.