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An atypical microfilaria in blood samples from inhabitants of Brazilian Amazon

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Abstract

An unindentified microfilaria sharing characteristics with Mansonella ozzardi and Onchocerca volvulus was detected in blood samples from seven human volunteers, inhabitants of a community in the border of Amazonas and Acre State. They were detected during epidemiological studies carried out in some communities along Antimary, Acre, and Purus Rivers in the Brazilian Amazon. The most striking difference was presented in the shape of the cephalic space from this microfilaria which was different from those of M. ozzardi and with similarities to O. volvulus in this region, but no remarkable differences were observed at the caudal region. More accurate studies are being carried out in order to provide additional data and supporting evidences before establishment of a new species can be done.

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Acknowledgements

We wish to thank Dr. Sixto Coscaron for his suggestions on the manuscript, Prof. Eduardo José Lopes Torres for helping me with the photographic material and Ana Carolina Valente for technical assistance. Brazilian financial support: Instituto Oswaldo Cruz, Coordenação de Pós Graduação em Biologia Parasitária, FarManguinhos, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Coordenação de Aperfeiçoamento de Pessoal de Ensino Superior, Programa CAPES — PROCAD, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Secretaria Estadual de Saúde do Acre, and Fundação de Tecnologia do Acre.

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Authors and Affiliations

  1. Laboratório de Simulídeos, Referência Nacional em Simulídeos, Oncocercose e Mansonelose, Pavilhão 108, sala 09, Instituto Oswaldo Cruz, FIOCRUZ, 21045-900, Rio de Janeiro, Brazil

    Y. L. Adami & M. Maia-Herzog

  2. Centro de Anatomia Patológica, Hospital Universitário de Brasília, Via L2 Norte SGAN 604/605 Módulo C, 70840-050, Brasília, Distrito Federal, Brazil

    M. A. P. Moraes

  3. Laboratório de Biologia de Helmintos Otto Wucherer, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), 21949-902, Rio de Janeiro, Brazil

    R. M. Lanfredi

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  1. Y. L. Adami
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  2. M. A. P. Moraes
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  3. R. M. Lanfredi
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  4. M. Maia-Herzog
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Correspondence to Y. L. Adami.

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Adami, Y.L., Moraes, M.A.P., Lanfredi, R.M. et al. An atypical microfilaria in blood samples from inhabitants of Brazilian Amazon. Parasitol Res 104, 95–99 (2008). https://doi.org/10.1007/s00436-008-1164-4

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  • DOI: https://doi.org/10.1007/s00436-008-1164-4

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