Presence of Aedes (Stegomyia) aegypti (Linnaeus, 1762) and its natural infection with dengue virus at unrecorded heights in Colombia

Freddy Ruiz-López, Ana González-Mazo, Andrés Vélez-Mira, Giovan F. Gómez, Luisa Zuleta, Sandra Uribe, Iván Darío Vélez-Bernal, .

Keywords: Aedes aegypti, altitude, geographic locations, dengue, Colombia

Abstract

Introduction: Aedes aegypti is the main vector of urban yellow fever, dengue, chikungunya and Zika viruses. The biogeographical distribution of this species has expanded due to global warming, and socioeconomic and cultural factors. The changes in the altitudinal distribution patterns of this vector and its natural infection are priority fields of research to develop entomological, virological and public health surveillance strategies. Objective: To evaluate the presence of A. aegypti and its natural infection with dengue virus in altitudes above 1.800 meters above sea level in two peripheral municipalities of the Valle de Aburrá, Antioquia, Colombia. Materials and methods: Twenty-one ovitraps were set in the municipalities of Bello and San Pedro de los Milagros, at altitudes ranging from 1.882 to 2.659 masl. Emerged adults caught in the ovitraps were tested by RT-PCR for dengue virus detection. Results: We collected 367 A. aegypti adults, seven of which were found as high as 2.302 masl in Tierradentro, Bello. We detected serotype 2 dengue infection in 12 A. aegypti specimens collected in the neighbourhood of París, in Bello, at 1.984 masl. Conclusion: We recorded A. aegypti at 2.302 masl, so far the highest altitudinal record in Colombia for this vector. Furthermore, mosquitoes collected at 1.984 masl were positive for dengue virus. These findings are significant as they identify regions in Colombia at risk of potential autochthonous transmission of dengue and other arboviruses by A. aegypti.

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  • Freddy Ruiz-López Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia
  • Ana González-Mazo Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia
  • Andrés Vélez-Mira Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia
  • Giovan F. Gómez Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia
  • Luisa Zuleta Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia Grupo de Investigación en Sistemática Molecular, Universidad Nacional de Colombia, Medellín, Colombia
  • Sandra Uribe Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia Grupo de Investigación en Sistemática Molecular, Universidad Nacional de Colombia, Medellín, Colombia
  • Iván Darío Vélez-Bernal Programa de Estudio y Control de Enfermedades Tropicales, PECET, Universidad de Antioquia, Medellín, Colombia

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How to Cite
1.
Ruiz-López F, González-Mazo A, Vélez-Mira A, Gómez GF, Zuleta L, Uribe S, et al. Presence of Aedes (Stegomyia) aegypti (Linnaeus, 1762) and its natural infection with dengue virus at unrecorded heights in Colombia. biomedica [Internet]. 2016 Jun. 1 [cited 2024 May 17];36(2):303-8. Available from: https://revistabiomedica.org/index.php/biomedica/article/view/3301

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Published
2016-06-01
Section
Short communication

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