title: [Risk factors associated to the epidemic outbreak of dengue virus infection.]
abstract: Objective: to identify the risk factors associated to the epidemic of dengue virus infections occurred at Queretaro, Mexico. Methods: a case-control study was carried out on 49 cases and 49 controls. The data included: age, sex, residency, schooling, occupation, clinical data, sources infected with Aedes aegypti, travelling, source of waters, and protection to water recipients. The protection to door and windows was investigated. χ2test and odds ratio were estimated. Results: the age group of 20-39 years was the most affected and women predominated. The Satellite area contributed with 38 cases (77.1 %). The absence of mosquito nettings on windows had an OR = 1.8, and ignorance of preventive activities had an OR = 2.8, while the use of insecticides (OR = 0.30) and mosquito repellents (OR = 0.54) were protective factors. Conclusions: the epidemic outbreak in Queretaro confirmed that Aedes aegypti has adapted to greater heights. This fact should alert to the sanitary authorities to face the possibility of an epidemic outbreak with great affectation among population.
authors.affiliation: Alumna de la Especialidad de Química Clínica, Universidad Autónoma de Querétaro, Querétaro, México. romemarq@live.com.mx.
authors.forename: María Del Rocío
authors.initials: MD
authors.lastname: García-Gutiérrez
authors.forename: Hilda
authors.initials: H
authors.lastname: Romero-Zepeda
authors.forename: Rubén
authors.initials: R
authors.lastname: Salvador Romero-Márquez
keywords: brotes de enfermedades; dengue virus; disease outbreaks; virus del dengue