Coccidioides — Culture and Identification
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This page provides testing information for Coccidiomycosis at Public Health Ontario (PHO). The causative agent(s) of Coccidiomycosis in North America is Coccidioides immitis/posadasii. Coccidioides immitis/posadasii is endemic to arid and semi-arid regions of the southwestern United States, northern Mexico and parts of Central and South America.
The following testing options are available for Coccidiomycosis:
- Fungal culture
If sending a specimen to PHO requesting for isolation, culture and identification of Coccidioides, please refer to testing information: Mycology — Fungal Culture – Systemic.
- Culture confirmation
If sending a cultured isolated, suspected as Coccidioides to PHO to confirm identification, please refer to testing information: Mycology — Reference Identification of Yeast, Filamentous Fungi and Nocardia/Aerobic Actinomycetes.
- Serology
If sending blood sample (serum) to PHO for investigation of serologic evidence of Coccidioides infection, please refer to testing information: Coccidioides — Serology.
About Coccidiomycosis
- Transmission: Infection is acquired through inhalation of airborne arthroconidia from disturbed soil.
- Symptoms: Clinical presentation can range from asymptomatic infection to severe pulmonary or disseminated disease.
- Risk factors: Risk factors include travel to endemic areas such as Arizona and California involving occupational or recreational exposure to dust, such as construction, farming, military activities, all-terrain vehicle (ATV) riding, and rock climbing.
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