Under the Scope
by Dr. Rajiv Sahay
There are over 100,000 species of fungi. Many fungi are good
and useful (edible mushrooms would be an example of these) while some cause
problems (some fungi can injure plants and humans). Every week the IEQ Review
will describe a specific microorganism, its morphological origin and potential
health effects. If you would like to know about a specific organism
and/or would like it published in The IEQ Review please email Dr. Rajiv
Sahay with the Environmental Diagnostics Laboratory (EDL) at
Pure Air Control Services laboratory@pureaircontrols.com.
This week we will cover...
Candida
albicans
This
species is the most commonly-isolated yeast in human disease. It has been
implicated in both superficial and systemic disease. Recent reports of
infections include corneal, nail, ear, endocarditis, and bloodstream. Risk
factors for infections with C.
albicans include age of 65 years or above, immunosuppression prior to
steroid use, leukocytosis, intensive care unit stays, or presence of
intravascular or urinary catheters. For those patients who have undergone
cancer chemotherapy and who often appear less critically ill, infections are
most likely to be caused by Candida
species other than C. albicans.
Although this species continues to be the most common species isolated in
bloodstream infections, reports show that the incidence is decreasing and the
resistance is rare in neonatal populations. Candida albicans is also a
predominate species in fungal biofilms on medical devises.
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