From Surveillance To Control: Evaluation of A Larvicide Intervention Against Aedes aegypti In Brownsville, Texas

South Texas is recognized as a potential area for the emergence and re-emergence of mosquito-borne diseases due to recent circulation of Zika, chikungunya, and dengue viruses. During 2017, high abundance found in the city of Brownsville, TX, in combination with the previous year's local transmi...

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Bibliographic Details
Published in:Journal of the American Mosquito Control Association 2019-09, Vol.35 (3), p.233-237
Main Authors: Garcia-Luna, Selene M, Chaves, Luis Fernando, Juarez, José G, Bolling, Bethany G, Rodriguez, Arturo, Presas, Ysaias E, Mutebi, John-Paul, Weaver, Scott C, Badillo-Vargas, Ismael E, Hamer, Gabriel L, Qualls, Whitney A
Format: Article
Language:English
Subjects:
Aedes - drug effects
Aedes - growth & development
Aedes aegypti
Animals
Aquatic insects
Bacillus thuringiensis - chemistry
Bio-assays
Bioassays
Census of Population
Contingency
Control
Dengue fever
Emergence
Health services
Human diseases
Insect control
Internet
Laboratories
Larva - drug effects
Larvae
Larvicides
Mosquito Control - methods
Mosquitoes
Pesticides
Rain
Seasonal variations
Surveillance
Texas
Turbines
Vector-borne diseases
Viral diseases
Viruses
Zika virus
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Summary:South Texas is recognized as a potential area for the emergence and re-emergence of mosquito-borne diseases due to recent circulation of Zika, chikungunya, and dengue viruses. During 2017, high abundance found in the city of Brownsville, TX, in combination with the previous year's local transmission of Zika virus, triggered the activation of the Texas Department of State Health Services Emergency Mosquito Control Contingency Contract. A contract with the Clarke Environmental and Mosquito Control was a response to control , using a ground-based wide-area larvicide spray (WALS™) containing . The WALS application was evaluated through a field-based bioassay and by comparing surveillance data pre- and post-WALS application. The WALS application bioassay demonstrated that the larvicide was effective up to 60 m into the target properties. Additionally, the number of captured in traps decreased in the WALS intervention areas compared with the untreated control areas, with an estimated 29% control.
ISSN:8756-971X
1943-6270
DOI:10.2987/19-6858.1