Sorry, I was checking to see if aspirin is okay to give if they do have Valley fever. Just online - but I did find this...
Hepatotoxic medication as well as aspirin and NSAIDs should be avoided during the acute disease.
http://www.itg.be/itg/DistanceLearni...ovirusesp5.htm
The best person to ask would be your vet. Sorry I couldn't be more help.