Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, 7 (1), 100-12

Emerging Chagas Disease: Trophic Network and Cycle of Transmission of Trypanosoma Cruzi From Palm Trees in the Amazon

Affiliations

Emerging Chagas Disease: Trophic Network and Cycle of Transmission of Trypanosoma Cruzi From Palm Trees in the Amazon

A R Teixeira et al. Emerg Infect Dis.

Abstract

A trophic network involving molds, invertebrates, and vertebrates, ancestrally adapted to the palm tree (Attalaea phalerata) microhabitat, maintains enzootic Trypanosoma cruzi infections in the Amazonian county Paço do Lumiar, state of Maranhão, Brazil. We assessed seropositivity for T. cruzi infections in the human population of the county, searched in palm trees for the triatomines that harbor these infections, and gathered demographic, environmental, and socioeconomic data. Rhodnius pictipes and R. neglectus in palm-tree frond clefts or in houses were infected with T. cruzi (57% and 41%, respectively). Human blood was found in 6.8% of R. pictipes in houses, and 9 of 10 wild Didelphis marsupialis had virulent T. cruzi infections. Increasing human population density, rain forest deforestation, and human predation of local fauna are risk factors for human T. cruzi infections.

Similar articles

See all similar articles

Cited by 28 PubMed Central articles

See all "Cited by" articles

References

    1. Rev Soc Bras Med Trop. 1988 Oct-Dec;21(4):193-7 - PubMed
    1. J Med Entomol. 1981 Jul;18(4):266-78 - PubMed
    1. Am J Trop Med Hyg. 1984 Nov;33(6):1084-95 - PubMed
    1. Mol Biochem Parasitol. 1991 Oct;48(2):211-21 - PubMed
    1. Mem Inst Oswaldo Cruz. 1983 Oct-Dec;78(4):391-8 - PubMed
Feedback