Introduction: Mexico City has no endemic presence of Aedes aegypti, and it is therefore free of vector-borne diseases, such as dengue fever, Zika and chikungunya. However, evidence has shown the presence of Aedes aegypti eggs in the city since 2015. Objective: To report the constant and increasing presence of Aedes aegypti eggs in Mexico City from 2015 to 2018. Methods: Surveillance was carried out using ovitraps. Eggs were counted and hatched in order to determine the species. Results: From 2015 to 2018, 378 organisms were identified as Ae. aegypti. In total, 76 Aedes aegypti-positive ovitraps were collected at 50 different places in 11 boroughs of the city. Northeastern Mexico City was the area with the highest number of positive traps. Conclusions: The results may be indicating a period of early colonization and the probable existence of cryptic colonies of the mosquito, and Mexico City could be therefore at risk of experiencing vector-borne epidemics.
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Mejía-Guevara, M. D., Correa-Morales, F., González-Acosta, C., Dávalos-Becerril, E., Peralta-Rodríguez, J. L., Martínez-Gaona, A., … Moreno-García, M. (2020). Aedes aegypti, the dengue fever mosquito in Mexico city. Early invasion and its potential risks. Gaceta Medica de Mexico, 156(5), 388–395. https://doi.org/10.24875/GMM.20000009
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