Paracoccidioidomycosis constitutes an important public health problem in Latin America. In Brazil, this disease is less frequent in North and Northeast regions, predominating the endemic areas in the Southeast. Despite the physiographic conditions of the North region favoring the development of Paracoccidioides brasiliensis, even so, the case reports are scarce. Perhaps this is due to the little consideration of deep mycoses about the differential diagnosis of chronic medical conditions, justified by the fact that the region is not considered endemic. With the objective of describing the prevalence of paracoccidioidomycosis in five cities of Acre, a cross-sectional population-based study was conducted, through a survey with the paracoccidioidin intradermal. The reading of the intradermal test was performed within 24 and 48 hours, being considered reactors the people with hardened areas of 5mm or more in diameter. Four hundred thirty-nine (439) people were studied and paracoccidiodomycosis-infection in the 48-hour reading was 41.2%. The findings of this study indicate that P. brasiliensis infection causes a considerable number of people in the study area to get infected, and therefore future clinical-epidemiological and mycological studies should better clarify the natural history of mycosis in this region.
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