Coccidioides immitis is primarily found in which region of the United States?

Coccidioides immitis is a fungus that causes coccidioidomycosis, commonly known as Valley Fever. This organism is primarily found in the soil of the southwestern United States, particularly in areas with arid climates such as southern California, Arizona, Nevada, New Mexico, and portions of Texas. The environmental conditions in these regions—characterized by warm temperatures and dry, dusty soil—favor the growth and dissemination of the spores of Coccidioides.

Understanding the geographic distribution of this pathogen is crucial for professionals involved in health care, environmental assessment, and mold remediation, as it informs both risk assessment and remediation strategies in affected areas. Knowing that it primarily resides in the Southwest helps professionals identify potential exposure risks for individuals living or working in those regions, allowing them to take appropriate precautions or actions in mold remediation and public health efforts.