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      Phlebotomine fauna (Diptera: Psychodidae) of an American cutaneous leishmaniasis endemic area in the state of Mato Grosso do Sul, Brazil

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          Abstract

          The occurrence of an outbreak of cutaneous leishmaniasis associated with Leishmania (Leishmania) amazonensis in the municipality of Bela Vista, state of Mato Grosso do Sul, Brazil, and the absence of information on its vectors in this area led the authors to undertake captures of phlebotomine sand flies, using Shannon traps and automatic CDC light traps, in domiciles, forested areas and animal shelters from February 2004-January 2006. A total of 808 specimens belonging to 18 sandfly species have been identified: Bichromomyia flaviscutellata,Brumptomyia avellari, Brumptomyia brumpti, Brumptomyia sp, Evandromyia aldafalcaoae, Evandromyia cortelezzii, Evandromyia evandroi, Evandromyia lenti, Evandromyia teratodes, Evandromyia termitophila, Lutzomyia longipalpis, Nyssomyia whitmani, Pintomyia christenseni, Psathyromyia aragaoi, Psathyromyia campograndensis, Psathyromyia punctigeniculata, Psathyromyia shannoni and Sciopemyia sordellii. The presence of Lu. longipalpis, Ny. whitmani and Bi. flaviscutellata, vectors of Leishmania chagasi, Leishmania braziliensis and L. amazonensis, respectively, has increased.

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          Canine visceral leishmaniasis: dog infectivity to sand flies from non-endemic areas.

          Canine visceral leishmaniasis (VL), caused by Leishmania infantum (Leishmania chagasi in the New World), is a zoonotic, endemic disease in Western Europe and Latin America. The potential spreading to new regions was suggested by the appearance of canine VL among foxhounds in the US. Although the sand fly vectors in the major foci of transmission have been described, no information exists on other sand flies that could propagate the infection outside endemic areas. We evaluated the capacity of Lutzomyia shannoni (Dyar) and Lutomyia youngi (Feliciangeli & Murillo), which are widely distributed in the New World, to acquire L chagasi (Cunha and Chagas) infections. A high proportion of L youngi were infected after feeding on an oligosymptomatic dog (51 per cent) or a polysymptomatic individual (95 per cent), but the intensity of infection was low ( 500 promastigotes/fly) was comparable (L longipalpis) or higher (L evansi) than in the New World vectors. It is hypothesised that the presence of infected dogs in areas where L shannoni or L youngi occur could initiate new endemic cycles of VL in both South and North America.
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            Studies on the biting habits and medical importance of East African mosquitoes in the genus Aedes: I - Subgenero Aedimorphus, Banksinella and Nunnius

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              Estudo epidemiológico sobre Leishmaniose tegumentar (LT) no município de Corguinho, Mato Grosso do Sul: estudos na população humana

              Com o objetivo de se conhecer a prevalência da infecção por leishmaniose tegumentar americana, e caracterização da população atingida, em área de transmissão recente, na localidade de Boa Sorte, município de Corguinho, MS, procedeu-se ao estudo, no período de março/91 a março/94, tia população residente, compreendendo 150 habitantes. Destes, 12 apresentavam lesões suspeitas de leishmaniose tegumentar. Em 8 deles foi possível a confirmação por meio de exames parasitológicos. Apenas um paciente apresentou a forma mucosa, os demais manifestaram as formas cutâneas, sendo: ulcerada (3), úlcero-verrucosa (1), úlcero- vegetante (1), placa-infiltrada (1) e lesão nodular com exuberante adenopatia regional (1). Os pacientes responderam bem ao tratamento com antimoniato de N-metil- glucamina (glucantime), 10 a 20mg Sbv/kg/dia durante 20 dias, com cicatrização das lesões e raros efeitos colaterais. O parasito isolado de todos os pacientes foi identificado como Leishmania (Viannia) braziliensis, através de anticorpos monoclonais. O teste de Montenegro aplicado em 150 moradores revelou 32 reagentes. Destes, 6 eram portadores da doença, 21 mostraram seqüelas sugestivas da parasitose e 5 não apresentaram sitiais da infecção. A faixa etária atingida pela parasitose compreendia de 22 a 78 anos com predomínio de homens (75%). A transmissão até o momento revelou-se de caráter extradomiciliar.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                mioc
                Memórias do Instituto Oswaldo Cruz
                Mem. Inst. Oswaldo Cruz
                Instituto Oswaldo Cruz, Ministério da Saúde (Rio de Janeiro )
                1678-8060
                August 2009
                : 104
                : 5
                : 695-702
                Affiliations
                [1 ] Universidade Federal de Mato Grosso do Sul Brazil
                [2 ] Fiocruz Brasil
                [3 ] Universidade de São Paulo Brazil
                [4 ] Universidade de São Paulo Brazil
                Article
                S0074-02762009000500005
                10.1590/S0074-02762009000500005
                19820827
                600aaa77-9bf2-4ba6-b1c9-a902cfe1b1c5

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0074-0276&lng=en
                Categories
                PARASITOLOGY
                TROPICAL MEDICINE

                Parasitology,Infectious disease & Microbiology
                Phlebotominae,Psychodidae,leishmaniasis,Mato Grosso do Sul,vectors

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