Scientists in South Korea have described a rapid method for diagnosing ringworm (dermatophytosis.)
Fungal culture is the “gold standard” method for identifying the species of dermatophyte involved, based on the colony characteristics and microscopic appearance. It is accurate but time consuming. Samples may have to be cultured for up to three weeks before the organism can be identified.
It’s not necessary to know the species before starting treatment. Indeed, to prevent the spread of infection, treatment is usually started pending the results of laboratory investigations.
However, there are occasions when it may be useful to know the identity of the dermatophyte involved, as it may help to identify the source of the outbreak. For example Trichophyton mentagrophytes can be found in soil and be carried by rodents.
Researchers at the Colleges of Veterinary Medicine at Seoul National University and Konkuk University compared a rapid molecular PCR assay with conventional fungal culture for diagnosing ringworm.
They found that the PCR analysis of the fungal DNA was superior to traditional fungal culture for diagnosing dermatophyte infection, “ in terms of sensitivity, specificity and particularly rapidity.”
Read more at www.equinescienceupdate.co.uk/rmmdd.htm
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