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LEISHMANIA (VIANNIA) NAIFFI LAINSON & SHAW 1989
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Pesquisa em Leishmaniose. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, INCT EpiAmO, Porto Velho, RO, Brasil .
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Pesquisa em Leishmaniose. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, INCT EpiAmO, Porto Velho, RO, Brasil .
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Pesquisa em Leishmaniose. Rio de Janeiro, RJ, Brasil / Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, INCT EpiAmO, Porto Velho, RO, Brasil .
Abstract
Just over 30 years ago, a new species of Leishmania of the subgenus Leishmania (Viannia) was described infecting the
armadillo Dasypus novemcinctus; then, a report of human infection followed. From the Brazilian Amazon and apparently
restricted to this region and its close borders, Leishmania (Viannia) naiffi has been characterized as a species that
grows easily in axenic culture medium and causes few to no lesions after inoculation in experimental animal models.
Results in the last decade indicate the occurrence of L. naiffi in vectors and human infections, including a report of
therapeutic failure possibly associated with Leishmania RNA virus 1. Overall, such accounts suggest that the parasite is
more dispersed and the disease less self-healing than previously expected.
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