Hurricane Response Guide for Environmental Public Health Professionals
Mosquitoes 1. Assess the situation. Conduct a rapid assessment of potential mosquito breeding sites Prioritize high-risk locations, such as densely populated areas, critical infrastructure, and vulnerable populations to efficiently allocate resources and reduce risks. Understand that nuisance mosquitoes will hatch immediately after a hurricane. Understand the types of mosquitoes common to the affected area and determine whether any of the twelve disease-carrying species are present. Understand current vector monitoring and control measures in the area if you are part of a strike team. 2. Implement larviciding measures. Type of Larvicide Description Liquids Liquid larvicide products are applied directly to water using backpack sprayers and truck- or aircraft-mounted sprayers. Dunks, tablets, bits, pellets, granules, and briquettes These forms of larvicide are also applied to areas where mosquitoes lay eggs. Steps for Application: Select your larvicide. Factors include: Effectiveness Environmental impact Compatibility State, tribal, local, and territorial (STLT) regulations and expert guidance for effective control Use larvicides to treat standing water that: Will not be used for drinking. Cannot be covered, dumped, or removed. Apply larvicides where mosquitoes lay eggs. IMPORTANT: Some states, tribes, and territories require an applicator license. Check STLT laws concerning who can apply pesticides, including larvicides. Use larvicides where mosquitoes lay eggs to help reduce the number of mosquitoes in an area. Mosquitoes lay eggs in items that hold water, such as: Buckets and rain barrels Fountains Gutters or downspouts Non-chlorinated swimming pools Pool covers that collect water Tires Tree holes ALWAYS follow the instructions on the label. Do not apply more than directed or reapply more often than instructed. 3. Perform adult mosquito surveillance. Set up traps to monitor adult mosquito populations and species composition. Focus on areas with a high likelihood of human exposure, such as residential areas where people have stayed in homes that may be damaged. Maintain detailed surveillance records and analyze data to verify the efficacy of control efforts. Reimbursement for control efforts typically requires surveillance data to qualify for financial reimbursement through FEMA.
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