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Environmental suitability for Lutzomyia longipalpis in a subtropical city with a recently established visceral leishmaniasis transmission cycle, Argentina.
Berrozpe, Pablo; Lamattina, Daniela; Santini, María Soledad; Araujo, Analía Vanesa; Utgés, María Eugenia; Salomón, Oscar Daniel.
Affiliation
  • Berrozpe P; Ministerio de Salud de la Nación, Instituto Nacional de Medicina Tropical, Puerto Iguazú, Misiones, Argentina.
  • Lamattina D; Ministerio de Ciencia, Tecnología e Innovación Productiva, Consejo Nacional de Investigaciones Científicas y Tecnológicas, Buenos Aires, Argentina.
  • Santini MS; Red de Investigación de la Leishmaniasis en Argentina, Buenos Aires, Argentina.
  • Araujo AV; Ministerio de Salud de la Nación, Instituto Nacional de Medicina Tropical, Puerto Iguazú, Misiones, Argentina.
  • Utgés ME; Ministerio de Ciencia, Tecnología e Innovación Productiva, Consejo Nacional de Investigaciones Científicas y Tecnológicas, Buenos Aires, Argentina.
  • Salomón OD; Ministerio de Salud de la Nación, Centro Nacional de Diagnóstico e Investigación en Endemo-Epidemias, Administración de Laboratorios e Institutos de Salud, Buenos Aires, Argentina.
Mem Inst Oswaldo Cruz ; 112(10): 674-680, 2017 Oct.
Article in En | MEDLINE | ID: mdl-28953995
ABSTRACT

BACKGROUND:

Visceral leishmaniasis (VL) is an endemic disease in northeastern Argentina including the Corrientes province, where the presence of the vector and canine cases of VL were recently confirmed in December 2008.

OBJECTIVES:

The objective of this study was to assess the modelling of micro- and macro-habitat variables to evaluate the urban environmental suitability for the spatial distribution of Lutzomyia longipalpis presence and abundance in an urban scenario.

METHODS:

Sampling of 45 sites distributed throughout Corrientes city (Argentina) was carried out using REDILA-BL minilight traps in December 2013. The sampled specimens were identified according to methods described by Galati (2003). The analysis of variables derived from the processing of satellite images (macro-habitat variables) and from the entomological sampling and surveys (micro-habitat variables) was performed using the statistical software R. Three generalised linear models were constructed composed of micro- and macro-habitat variables to explain the spatial distribution of the abundance of Lu. longipalpis and one composed of micro-habitat variables to explain the occurrence of the vector.

FINDINGS:

A total of 609 phlebotominae belonging to five species were collected, of which 56% were Lu. longipalpis. In addition, the presence of Nyssomyia neivai and Migonemya migonei, which are vectors of tegumentary leishmaniasis, were also documented and represented 34.81% and 6.74% of the collections, respectively. The explanatory variable normalised difference vegetation index (NDVI) described the abundance distribution, whereas the presence of farmyard animals was important for explaining both the abundance and the occurrence of the vector. MAIN

CONCLUSIONS:

The results contribute to the identification of variables that can be used to establish priority areas for entomological surveillance and provide an efficient transfer tool for the control and prevention of vector-borne diseases.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Psychodidae / Insect Vectors Type of study: Prognostic_studies Limits: Animals Country/Region as subject: America do sul / Argentina Language: En Journal: Mem Inst Oswaldo Cruz Year: 2017 Type: Article Affiliation country: Argentina

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Psychodidae / Insect Vectors Type of study: Prognostic_studies Limits: Animals Country/Region as subject: America do sul / Argentina Language: En Journal: Mem Inst Oswaldo Cruz Year: 2017 Type: Article Affiliation country: Argentina