Ten percent of adults hospitalized with pneumonia at a Phoenix hospital who were tested for Valley fever tested positive, and roughly a quarter of admitted pneumonia patients were never tested at all.
Mayo Clinic Phoenix researchers reviewed the medical records of 1,141 adults admitted with community-acquired pneumonia from November 2024 through October 2025. Of those patients, 76 percent were tested for Coccidioides infection, and 10 percent of the tested group had positive results. The findings were published in Open Forum Infectious Diseases and summarized by CIDRAP.
