Instituto de Investigación en Energía No Convencional, Departamento de Física, Universidad Nacional de Salta, Salta, Argentina.
Instituto de Investigaciones de Enfermedades Tropicales, Sede Regional Orán, Universidad Nacional de Salta, Orán, Argentina.
Am J Trop Med Hyg. 2022 Aug 29;107(4):916-924. doi: 10.4269/ajtmh.21-0364. Print 2022 Oct 12.
Arboviruses transmitted by Aedes aegypti pose a threat to global public health. Because there are no vaccines or drugs available, the prevention of these diseases in Argentina is based on integrated vector control. In this work, the spatiotemporal dynamics of the vector distribution was analyzed by monitoring oviposition. This information allowed the planning of anti-vector interventions and the evaluation of their effect on the relative abundance of mosquito populations in San Ramón de la Nueva Orán. Observed data were compared with the eggs expected via a statistical model based on meteorological variables. The oviposition substrate preference of mosquito females was also evaluated, and the possible relationship between the relative abundance of the vector and sociodemographic and environmental variables (normalized difference vegetation index and normalized difference water index) was explored. A total of 4,193 eggs of Ae. aegypti were collected, and spatial clusters were detected for all months for which the presence of the mosquito was reported. The observed number of eggs was significantly less than the expected-corrected egg abundance. A significant correlation of oviposition activity was found with three sociodemographic variables, whereas no significant correlation was found with mean or median values of the environmental variables studied. This monitoring strategy made it possible to address the interventions and evaluate them, proposing them as good complementary tools for the control of Ae. aegypti in northern Argentina.
埃及伊蚊传播的虫媒病毒对全球公共卫生构成威胁。由于目前尚无可用的疫苗或药物，因此阿根廷的这些疾病预防主要基于综合的病媒控制。在这项工作中，通过监测产卵来分析病媒的时空动态分布。这些信息有助于规划抗蚊干预措施，并评估其对圣拉蒙德新奥拉恩地区蚊群相对丰度的影响。观察到的数据与基于气象变量的统计模型预测的预期卵数进行了比较。还评估了雌性蚊子对产卵基质的偏好，并探讨了蚊媒相对丰度与社会人口和环境变量（归一化差异植被指数和归一化差异水指数）之间的可能关系。共收集了 4193 枚埃及伊蚊卵，对所有报告有蚊子存在的月份都进行了空间聚类检测。实际观察到的卵数明显少于校正后的预期卵数。产卵活动与三个社会人口变量显著相关，而与所研究环境变量的平均值或中位数无显著相关性。这种监测策略能够进行干预并对其进行评估，将其作为阿根廷北部控制埃及伊蚊的良好补充工具。
