Inquérito intradérmico com histoplasmina e paracoccidioidina em duas regiöes do Rio Grande do Sul / Intradermal inquest with histoplasm and paracoccidioidin in two 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 per cent and to paracoccidioidin 82 per cent. In Santo Angelo 48 per centof the intradermical reactions were positive to histoplasmin and 39 per centto paracoccidioidin.