Chris,
Once you have it you should be free from it for the rest of your life. Everyone in my family got it when we first moved to Phoenix about 10 years ago.
Danger! Stay away from Phoenix! Valley fever! Rattlesnakes, scorpions, tarantulas, sharp pointy plants, mountain lions, and coyotes that will eat your pets. All true!
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Thermo-regulate, hydrate and communicate.