the United States. It is likelv that L donovani was of animal origin, as were other members of the genus, and in Brazil, foxes are a significant animal reservoir. The sensitivity of the Brazilian disease to antimonial drugs does not fit with the resistance of the infantum subspecies found in Portugal. Today there are epidemics of kala-azar among poor children in favelas in cities of north eastern Brazil such as Teresina, Sao Lui and Santarem.
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O’Connor et al. (1990) studied this question.
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