Natural Infection of Leishmania ( Viannia ) braziliensis in Mus musculus Captured in Mato Grosso, Brazil

We report natural infection by Leishmania (Viannia) braziliensis in Mus musculus and Necromys lasiurus using molecular analyses (PCR-RFLP) of femoral bone marrow and skin fragments. The aim of this study was to detect infection by pathogenic species of Leishmania in small mammals in the state of Mato Grosso, Brazil. The animals were captured in Peixoto de Azevedo, a cutaneous leishmaniasis-endemic region located in the north of the state, from October 30 to November 3, 2008. Natural infection by Leishmania in synanthropic rodents may be a threat to humans due to cohabitation of human domiciles in this area.