Prevention
The best way to prevent West Nile virus infection is to avoid mosquito bites. Using mosquito-repellant products containing DEET and wearing long sleeves and pants are the most effective way to avoid bites. Community spraying for mosquitos may also prevent mosquito breeding.
Mosquitos breed in stagnant water. If you notice pools of standing water -- even in small areas such as trash bins and plant saucers -- drain them promptly.
Testing of donated blood and organs is currently being evaluated. There are no guidelines at present.