From Daily Mail (caution: tabloid):
Giant storms filled with potentially deadly fungal spores are set to sweep across at least 11 US states this summer, with the worst conditions still weeks away.
Meteorologists and health experts have warned that dust storms in the Southwest will stir up dangerous fungal spores from the soil through September, potentially exposing millions to Valley fever. This common illness is a lung infection caused by breathing in microscopic fungus particles called Coccidioides that live in dry soil frequently blown around by strong desert winds.