The best line of defense is to protect yourself from being bitten (e.g., using repellents, ensuring window and door screens have no holes, and wearing clothing that covers your skin while outdoors).

Removing standing water (e.g., removing potential breeding sites, such as garbage cans, flower pots, bird baths, discarded auto-tires or other containers that hold water) is most useful for decreasing virus risk.

If there is a high risk of human disease, control activities may take place. That may include reducing populations of mosquitoes while they are still in their immature (larval) state and reducing populations of adult, flying mosquitoes using truck-based ground spraying.