Spatial distribution of triatomines (Reduviidae: Triatominae) in urban areas of the city of Salvador, Bahia, Brazil

Karine de Souza O. Santana, Maria Emília Bavia, Artur Dias Lima, Isabel Cristina S. Guimarães, Ênio Silva Soares, Marta Mariana Nascimento Silva, Jorge Mendonça, Moara de Santana Martin
  • Karine de Souza O. Santana
    Federal University of Bahia, School of Veterinary Medicine, Preventive Medicine VeterFamily and Friends Pacificainary Department, Laboratory of Monitoring Disease by GIS, Salvador, Brazil | kasousan@yahoo.com.br
  • Maria Emília Bavia
    Federal University of Bahia, School of Veterinary Medicine, Preventive Medicine VeterFamily and Friends Pacificainary Department, Laboratory of Monitoring Disease by GIS, Salvador, Brazil
  • Artur Dias Lima
    State University of Bahia, Life and Science Department, Salvador, Brazil
  • Isabel Cristina S. Guimarães
    Municipal Health Secretariat, Center for Zoonosis Control, Salvador, Brazil
  • Ênio Silva Soares
    State Health Secretariat, Salvador, Brazil
  • Marta Mariana Nascimento Silva
    Federal University of Bahia, School of Veterinary Medicine, Preventive Medicine VeterFamily and Friends Pacificainary Department, Laboratory of Monitoring Disease by GIS, Salvador, Brazil
  • Jorge Mendonça
    State Health Secretariat, Salvador, Brazil
  • Moara de Santana Martin
    Federal University of Bahia, School of Veterinary Medicine, Preventive Medicine VeterFamily and Friends Pacificainary Department, Laboratory of Monitoring Disease by GIS, Salvador, Brazil

Abstract

Environmental changes have a strong influence on the emergence and/or reemergence of infectious diseases. The city of Salvador, Brazil -currently the focus of a housing boom linked to massive deforestation- is an example in point as the destruction of the remaining areas of the Atlantic Forest around the city has led to an increased risk for Chagas disease. Human domiciles have been invaded by the triatomine vectors of Trypansoma cruzi, the flagellate protozoan causing Chagas disease, a problem of particular concern in urban/suburban areas of the city such as the Patamares sector in the north-east, where numbers of both the vector and human cases of the disease have increased lately. To control and prevent further deterioration of the situation, the control programme for Chagas disease, developed by the Bahia Center for Zoonosis Control, has divided the area into a grid of designated surveillance units (ZIs) that are subjected to vector examination. In six out of 98 of these ZIs, 988 triatomes were collected and georeferenced during the 3-year period between 2006 and 2009. The hottest months, that are also generally the driest, showed the highest numbers of triatomines with Triatoma tibiamaculata being the predominant species (98.3%) with Panstrongylus geniculatus present only occasionally (0.6%). Fifty-four percent of all triatomines captured were found inside the homes, and 48.6% out of 479 individuals in the affected ZIs selected for analysis tested positive for T. cruzi infection. The study presented here is a pioneering initiative to map the spatial distribution of triatomines based on geographical information systems with the additional aim of contributing to an expanded knowledge-base about T. cruzi and its vectors in urban areas and raise public health awareness of the risks involved.

Keywords

Trypansoma cruzi, Chagas disease, Triatoma, deforestation, geographical information system, Brazil.

Full Text:

PDF
Submitted: 2014-12-19 09:53:51
Published: 2011-05-01 00:00:00
Search for citations in Google Scholar
Related articles: Google Scholar
Abstract views:
245

Views:
PDF
232

Article Metrics

Metrics Loading ...

Metrics powered by PLOS ALM


Copyright (c) 2011 Karine de Souza O. Santana, Maria Emília Bavia, Artur Dias Lima, Isabel Cristina S. Guimarães, Ênio Silva Soares, Marta Mariana Nascimento Silva, Jorge Mendonça, Moara de Santana Martin

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
 
© PAGEPress 2008-2017     -     PAGEPress is a registered trademark property of PAGEPress srl, Italy.     -     VAT: IT02125780185