Zoonosis Control Branch, Texas Department of State Health Services, Austin, TX 78756.
757 Aerial Spray Flight, Youngstown Air Reserve Station, Vienna, OH 44473.
J Am Mosq Control Assoc. 2020 Jun 1;36(2s):61-67. doi: 10.2987/19-6883.1.
Hurricane Harvey has been recorded as the wettest cyclone in United States history, resulting in devastating and catastrophic flooding for the Texas Gulf Coast. The nature of the path of the hurricane, with multiple landfalls along the Texas Gulf Coast, resulted in the largest aerial mosquito control effort for one single storm. Two mosquito control contractors and the Air Force Aerial Spray Unit of the US Air Force Reserve were used to aerial treat 6,765,971 acres (3,075,441 ha) in 29 of the 60 disaster-declared counties in Texas. During the response, 101,253 liters of Dibrom® (active ingredient [AI]: naled) and 48,735 liters of Duet™ (AI: 1% prallethrin and 5% sumithrin) were used. In 23/29 counties requesting aerial spraying, mosquito control contractors were used to conduct pre- and postaerial application mosquito surveillance. The remaining 6 counties conducted their own surveillance during the response. A total of 105,153 mosquitoes in 7 genera and 35 species were collected during this response with the major floodwater nuisance mosquito being Psorophora columbiae. The most abundant vector mosquito collected was Culex nigripalpus. Duet at the 0.8% and 1% application rates resulted in 49% and 69% control of Ps. columbiae, respectively. Dibrom application resulted in 95% and 93% control of Ps. Columbia and Cx. nigripalpus populations, respectively.
哈维飓风已被记录为美国历史上降雨量最大的气旋，给德克萨斯湾沿岸地区造成了毁灭性和灾难性的洪灾。飓风路径的性质是多次在德克萨斯湾沿岸登陆，导致了针对单一风暴进行的最大规模的空中蚊虫控制行动。两家蚊虫防治承包商和美国空军预备役部队的空军空中喷雾部队被用于对德克萨斯州 60 个受灾宣布县中的 29 个县进行空中处理，总面积为 6,765,971 英亩（3,075,441 公顷）。在应对行动中，使用了 101,253 升 Dibrom®（有效成分[AI]：naled）和 48,735 升 Duet™（AI：1% prallethrin 和 5% sumithrin）。在要求进行空中喷洒的 23/29 个县中，蚊虫防治承包商被用于进行空中喷洒前后的蚊虫监测。其余 6 个县在应对行动期间自行进行监测。在这次应对行动中，共收集了 7 属 35 种 105,153 只蚊子，主要的洪水滋扰蚊种为斑蚊。收集到的数量最多的媒介蚊种是黑尾库蚊。Duet 以 0.8%和 1%的施用量分别对斑蚊的控制率达到了 49%和 69%。Dibrom 的应用使斑蚊和黑尾库蚊的种群数量分别得到了 95%和 93%的控制。
