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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Survey of Bancroftian filariasis infection in humans and Culex mosquitoes in the western Brazilian Amazon region: implications for transmission and control

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Author(s):
Rodolfo Luís Korte ; Gilberto Fontes [2] ; Juliana de Souza Almeida Aranha Camargo [3] ; Eliana Maria Maurício da Rocha [4] ; Edicarlos André Cavalcante de Araújo [5] ; Marcelo Zagonel de Oliveira [6] ; Rafael Vital dos Santos [7] ; Luís Marcelo Aranha Camargo
Total Authors: 8
Document type: Journal article
Source: Revista da Sociedade Brasileira de Medicina Tropical; v. 46, n. 2, p. 214-220, 2013-04-00.
Abstract

IntroductionThe aim of this work was to identify possible lymphatic filariasis foci in the western Brazilian Amazonian that could be established from the reports of Rachou in the 1950s. The study was conducted in three cities of the western Brazilian Amazon region - Porto Velho and Guajará-Mirim (State of Rondônia) and Humaitá (State of Amazonas).MethodsFor human infection evaluation thick blood smear stained with Giemsa was used to analyze samples collected from 10pm to 1am. Polymerase chain reaction (PCR) was used to examine mosquito vectors for the presence of Wuchereria bancrofti DNA. Humans were randomly sampled from night schools students and from inhabitants in neighborhoods lacking sanitation. Mosquitoes were collected from residences only.ResultsA total 2,709 night students enrolled in the Program for Education of Young Adults (EJA), and 935 people registered in the residences near the schools were examined, being 641 from Porto Velho, 214 from Guajará-Mirim and 80 from Humaitá. No individual examined was positive for the presence of microfilariae in the blood stream. A total of 7,860 female Culex quinquefasciatus specimens examined were negative by PCR.ConclusionsThis survey including human and mosquito examinations indicates that the western Amazon region of Brazil is not a focus of Bancroftian filariasis infection or transmission. Therefore, there is no need to be included in the Brazilian lymphatic filariasis control program. (AU)

FAPESP's process: 07/00848-9 - Investigation of the occurrence of bancroftian filariasis in Porto Velho, Rondônia, Brazil
Grantee:Luís Marcelo Aranha Camargo
Support Opportunities: Regular Research Grants