Griffin, the USGS microbiologist, says one gram of desert soil can contain as many as one billion microorganisms. Any type of disturbance in soil—from natural forces such as wind or earthquakes or from man—initiated activities such as construction or off-road vehicles—could spread valley fever.
Experts from the Valley Fever Institute in Kern County say since the earth shifted so much there's a chance there may be a spike in Valley Fever cases. Officials say they're basing their hypothesis on past experiences.
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