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Gaceta Médica Boliviana

On-line version ISSN 1012-2966


CASTILLO-QUINO, Rubén et al. Adaptation of mosquito Aedes aegypti a 2 550 m s.n.m. Cochabamba, Bolivia. February 2016. Gac Med Bol [online]. 2018, vol.41, n.1, pp.24-30. ISSN 1012-2966.

Objetive: to provide data of the adaptation of Aedes aegypti at higher altitudes than its natural habitat in the department Cochabamba. Methods: notification as well as Entomological Surveillance allowed taxonomic and geographic characterization of Aedes aegypti infestation in municipalities of the metropolitan axis of Cochabamba department and to observe the change in the epidemiological scenario produced. The use of entomological research materials, besides the integral study allowed to identify predisposing factors for the colonization of the vector. Results: the presence of the vector was found at different geographic altitudes and in several municipalities in the department of Cochabamba, where it was previously not found. An unusual temperature variation and rainfall in January 2016 provided favorable climatic conditions for the proliferation of Aedes aegypti and other vectors. Greater infestation was identified in the southern area of the city of Cochabamba, besides being the area that has presented more risk factors such as the presence of common and non-common artificial breeding grounds, with an incalculable presence of intradomiciliary waste. Conclusions: observing the presence of the vector in large municipalities such as Cercado, denotes a high risk for the population, which represents an ESPII-ESPIN. Climate change as one of the factors for the variation of the various ecological niches has allowed the Valleys to provide conditions conducive to the colonization of Aedes aegypti and that it overcomes adaptation to altitudes higher than 2200 m s.n.m. The city of Cochabamba is an important entry point for the entry of people from endemic areas of Dengue, Zika and Chikungunya transmission, both from the outside and the interior, which represents a high risk for the transmission of these diseases in the new areas of vector dispersion. Until July 2016 only the autochthonous presentation of a case in the city of Cochabamba was evidenced. The difficulty in the provision and storage of water in the dwellings are fundamental factors for the proliferation of potential breeding sites for Aedes aegypti.

Keywords : Altitude; Aedes aegypti; ESPII; ESPIN; Hatcheries.

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