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Case Reports
. 2021 Jan 12;6(1):9.
doi: 10.3390/tropicalmed6010009.

Tinea Capitis Caused by Microsporum audouninii: A Report of Two Cases from Côte D'Ivoire, West Africa

Rie Roselyne Yotsu  1   2   3 , Kouamé Kouadio  4 , Aubin Yao  5 , Bamba Vagamon  6   7 , Motoi Takenaka  8 , Hiroyuki Murota  8 , Koichi Makimura  9 , Katsutaro Nishimoto  10
Affiliations
Case Reports

Tinea Capitis Caused by Microsporum audouninii: A Report of Two Cases from Côte D'Ivoire, West Africa

Rie Roselyne Yotsu et al. Trop Med Infect Dis. .

Abstract

We report here two cases of tinea capitis caused by Microsporum (M.) audouinii in Côte d'Ivoire, West Africa. The patients were a three-year-old boy and a six-year-old girl who presented with scaly patches on the scalp. The causative fungus was isolated using an adhesive tape-sampling method and cultured on Sabouraud dextrose agar plates. It was identified as M. audouinii both by its macroscopic and microscopic features, confirmed by DNA sequencing. These are the first documented cases of M. audouinii infections confirmed with DNA sequencing to be reported from Côte d'Ivoire. The practicality of the tape-sampling method makes it possible to carry out epidemiological surveys evaluating the distribution of these dermatophytic infections in remote, resource-limited settings.

Keywords: Microsporum audouinii; dermatophyte; dermatophytosis; developing country; sub-Saharan Africa; tape sampling; tinea; tinea capitis.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Clinical presentation of two cases of Microsporum audouinii. (A) Case 1 in a three-year-old boy. Irregular patches of whitish to silver scales with breaking hairs of the scalp. (B) Case 2 in a six-year-old girl. Raised and well-defined multiple patches of the scalp. She had her hair shaved as part of the treatment (local practice).
Figure 2
Figure 2
Adhesive tape sample containing scales and hair placed on Sabouraud dextrose agar plate. Growth of colonies of dermatophyte was seen from the edges of the tape at Week 3.
Figure 3
Figure 3
Macroscopic morphological features of Microsporum audouinii grown on Sabouraud dextrose agar plate at Week 3. Flat, velvety, whitish colonies were cultured.
Figure 4
Figure 4
Microscopic morphological features of Microsporum audouinii. Spindle-shaped, septate macroconidia with echinulate surface (magnification x200).
Figure 5
Figure 5
Molecular phylogenetic tree of the two strains of Microsporum audouinii from our study (shown with ⁎).
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