Periorbital fungal infection known as mucormycosis, or phycomycosis
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Zygomycosis is the broadest term to refer to infections caused by bread mold fungi of the zygomycota phylum. However, because zygomycota has been identified as polyphyletic, and is not included in modern fungal classification systems, the diseases that zygomycosis can refer to are better called by their specific names: mucormycosis (after Mucorales), phycomycosis (after Phycomycetes) and basidiobolomycosis (after Basidiobolus). These rare yet serious and potentially life-threatening fungal infections usually affect the face or oropharyngeal (nose and mouth) cavity. Zygomycosis type infections are most often caused by common fungi found in soil and decaying vegetation. While most individuals are exposed to the fungi on a regular basis, those with immune disorders (immunocompromised) are more prone to fungal infection. These types of infections are also common after natural disasters, such as tornadoes or earthquakes, where people have open wounds that have become filled with soil or vegetative matter.
The condition may affect the gastrointestinal tract or the skin. In non-trauma cases, it usually begins in the nose and paranasal sinuses and is one of the most rapidly spreading fungal infections in humans. Common symptoms include thrombosis and tissue necrosis. Treatment consists of prompt and intensive antifungal drug therapy and surgery to remove the infected tissue. The prognosis varies vastly depending upon an individual patient's circumstances.
Pathogenic Zygomycosis is caused by species in two orders: Mucorales or Entomophthorales, with the former causing far more disease than the latter. These diseases are known as "mucormycosis" and "entomophthoramycosis", respectively.
- Order Mucorales (mucormycosis)
- Family Mucoraceae
- Family Cunninghamellaceae
- Family Thamnidiaceae
- Family Saksenaeaceae
- Family Syncephalastraceae
- Order Entomophthorales (entomophthoramycosis)
Oomycosis in animals
The term oomycosis is used to describe oomycete infections. These are more common in animals, notably dogs and horses. These are heterokonts, not true fungi. Types include pythiosis (caused by Pythium insidiosum) and lagenidiosis.
Zygomycosis in natural disasters
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- Centers for Disease Control and Prevention (1999). "Gastrointestinal Basidiobolomycosis — Arizona, 1994–1999". Morbidity and Mortality Weekly Report 48 (32): 710–3. PMID 21033182.
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- Draper, Bill; Suhr, Jim (June 11, 2011). "Survivors of Joplin tornado develop rare infection". Seattle Post-Intelligencer. Associated Press.
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- Ribes, J. A.; Vanover-Sams, C. L.; Baker, D. J. (2000). "Zygomycetes in Human Disease". Clinical Microbiology Reviews 13 (2): 236–301. doi:10.1128/CMR.13.2.236-301.2000. PMC 100153. PMID 10756000.
- Prabhu, R. M.; Patel, R. (2004). "Mucormycosis and entomophthoramycosis: A review of the clinical manifestations, diagnosis and treatment". Clinical Microbiology and Infection 10: 31–47. doi:10.1111/j.1470-9465.2004.00843.x. PMID 14748801.
- "Merck Veterinary Manual". Retrieved 2009-04-04.
- Snyder, Katherine D.; Spaulding, Kathy; Edwards, John (2010). "Imaging diagnosis—tracheobronchial zygomycosis in a cat". Veterinary Radiology & Ultrasound 51 (6): 617–20. doi:10.1111/j.1740-8261.2010.01720.x. PMID 21158233.
- Joplin toll rises to 151; some suffer from fungus