Currently, there is no sure fire way to prevent Valley Fever in pets short of never
residing in or traveling through the areas where the fungus grows. Valley Fever
endemic areas are among the fastest growing regions in the country, which makes
encounters of animals and people with the fungus a likely event.
Things you can do to reduce the likelihood of your dog's exposure to the fungus
are to avoid activities that generate dust, reduce digging behavior by dogs, prevent
sniffing in rodent holes, and keep dogs indoors more than outdoors. Treating the
soil is currently not practical as the fungus lives in spotty areas and can live
up to 12 inches deep in the ground. Yard ground cover that reduces dust, however,
is helpful: grass and deep gravel or other dust-controlling cover.
A vaccine is under development. It is possible a vaccine will be available in the
future to prevent Valley Fever or make it only a very mild illness in dogs. Vaccination
against Valley Fever would be very useful for animals traveling to places like southern
Arizona and southern California as well as those dogs that live in these places.