Which vector control strategy is commonly deployed after disasters to prevent disease transmission?

• A. Eliminate standing water
• B. Build new hospitals
• C. Isolate buildings
• D. All of the above

Answer: (D)

Controlling vectors after disasters centers on cutting the conditions that let disease-carrying insects reproduce and people get bitten. Eliminating standing water directly targets mosquito breeding sites; without water, many mosquitoes cannot lay eggs, so the adult population declines and the risk of vector-borne transmission drops. Building new hospitals helps with care capacity, but it doesn’t address the source of transmission. Isolating buildings is a containment measure for certain infections, not a vector-control action that reduces mosquito populations or contact. So, among these options, removing standing water is the most effective vector-control action and the best choice for preventing disease transmission after a disaster.