There is not a WNV vaccine currently available for dogs and cats. The most effective way to prevent infection with West Nile Virus is to eliminate mosquito-breeding sites (areas of stagnant water) around your home and property. Spot flea products are reportedly not effective at repelling or killing mosquitoes. However, flea sprays containing pyrethrins may have some value as repellents. Follow label directions carefully. Never use an insect repellent on your pets unless it is specifically approved for such use.
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