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.
journal_name
Emerg Infect Disjournal_title
Emerging infectious diseasesauthors
Teixeira AR,Monteiro PS,Rebelo JM,Argañaraz ER,Vieira D,Lauria-Pires L,Nascimento R,Vexenat CA,Silva AR,Ault SK,Costa JMdoi
10.3201/eid0701.700100subject
Has Abstractpub_date
2001-01-01 00:00:00pages
100-12issue
1eissn
1080-6040issn
1080-6059journal_volume
7pub_type
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