Estudio epidemiológico de la tinea capitis en una población de Santiago de Chile. La aparición de Trichophyton tonsurans como agente etiológico

Duran, Ligia Aranibar; González, Jonathan Stevens; Ducommun, Carlos Palma; Manque, Solange Zapata; Olave, Javiera Pizarro

doi:10.1016/j.piel.2017.06.007

Cited by 4 publications

(5 citation statements)

References 14 publications

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“…It has been observed that T. tonsurans is an emerging pathogen, and it currently occupies the second place after M. canis as a TC causing agent. This could be explained by increasing immigration and the anthropophilic characteristics of the fungus, favouring its transmission due to changes in the lifestyle 73 . In addition, the control of domestic animals has helped to limit the presence of zoophilic species in some regions 67,80,102 .…”

Section: Discussionmentioning

confidence: 99%

“…TC infection occurred in both sexes and all ages (0–87 years), but predominantly in males under 8 years of age. In South American countries, the zoophilic fungi M. canis and T. mentagrophytes , and the geophilic fungus M. gypseum , were the main aetiological agents, followed by T. tonsurans, T. rubrum, M. audouinii, T. verrucosum , M. nanum, T. schoenleinii, Trichophyton concentricum, T. violaceum and M. langeronii 69–79 (Table 2).…”

Section: Methodsmentioning

confidence: 99%

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A systematic review of worldwide data on tinea capitis: analysis of the last 20 years

Rodríguez-Cerdeira

Martínez‐Herrera

Szepietowski

et al. 2020

Acad Dermatol Venereol

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Dermatophyte infections are the most common fungal infections in humans; among them, tinea capitis (TC) – the most contagious fungal infection – is caused by anthropophilic, zoophilic and geophilic dermatophytes. The purpose of this systematic review was to determine the different aetiological variants involved in TC and the overall epidemiology of the causes of this infection in the last two decades. We searched the MEDLINE (PubMed) and Embase databases for articles published from July 2000 to August 2019 using the following search terms: ‘Tinea capitis’, ‘Africa’, ‘America’, ‘Asia’, ‘Europe’, ‘Oceania’, and the names of the countries on each continent. The flow of information through the different phases in this systematic review was depicted using a PRISMA flow diagram, which mapped the number of records identified, included and excluded, and the reasons for exclusion. Our findings indicate that the frequency of different aetiologic agents of TC in the reported studies varied globally, from 0.4–87.7% in Africa, 0.2–74.0% in North America, 0.0–91.2% in Eastern Asia, 0.0–69.0% in Eastern Europe and 2.9–86.4% in Oceania. Microsporum canis is the most frequent reported zoophilic agent worldwide, while Trichophyton violaceum and Trichophyton tonsurans are the predominant anthropophilic agents. Over time, the frequency of these latter fungal infections has increased globally, and these fungi have become the major species globally. Anthropophilic transmission – the most prevalent type of transmission – could be explained by two factors: (i) the socioeconomic status of affected countries and population groups with associated risk factors and (ii) movement of populations importing new causes of infection to areas where they had not been encountered previously. We observed that intercontinental migration and travel; globalization; environmental, climatic and ecological changes; and accelerated evolution of health technologies may influence the observed epidemiological changes and, consequently, contributed to the variations in the global status of TC.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

A systematic review of worldwide data on tinea capitis: analysis of the last 20 years

Rodríguez-Cerdeira

Martínez‐Herrera

Szepietowski

et al. 2020

Acad Dermatol Venereol

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“…En América del Sur se ha descrito la circulación de este agente en varios de los países, tanto en dermatofitosis de niños como en adultos 7, [14][15][16] . En Chile se reportó su aparición en el 2012 y se describió un aumento sostenido de los casos hasta el año 2015 en tiña capitis de niños 8 . Nuestro trabajo confirma que este agente sigue circulando en nuestro país y que, además, puede provocar brotes comunitarios de dermatofitosis.…”

Section: Discussionunclassified

“…En Centroamérica y América del Sur se han descrito aislamientos frecuentes en los últimos años, especialmente en niños 6,7 . En Chile, desde el año 2012 se ha demostrado la circulación de este agente en tiña capitis, probablemente influenciado por el aumento de la inmigración en los últimos años 8 .…”

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Brote de tiña por Trichophyton tonsurans en una escuela básica de Valparaíso, Chile

Cruz

H.²,

et al. 2019

Rev. chil. infectol.

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Ringworm of Trichophyton tonsurans outbreak in a basic school in Valparaíso, Chile Background: Ringworm are skin and its annexes infections. Trichophyton tonsurans is an emergent anthropophilic fungus that might cause outbreaks. Aim: To describe a ringworm outbreak by T. tonsurans in an elementary school in Valparaíso, Chile. Methods: A descriptive study was run between June and August, 2018. Students and his closest relatives in contact with them who were clinically diagnosed with ringworm have been considered a case. Mycological studies of samples had been carried out through morphophysiology tests. Data are shown in numbers and percentages. Results: There were 18 cases, 16 kids (15 from kindergarten) and 2 adults. Attack rate was 68% in kindergarten. Nine cases were boys with average age of 6 years old. For 14 cases their nationality was Chilean and in 1 case Haitian. First case was a Chilean boy, and primary case was a Haitian boy. The most frequent location was face. Ten cases yielded positive cultures for T. tonsurans. Most of the patients needed terbinafine treatment after a therapeutic failure performed with clotrimazole. Conclusion: T. tonsurans outbreak ocurred mainly in kindergarten male. The most frequent location was face. Most of the patients needed terbinafine treatment after a therapeutic failure with clotrimazole.

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“…In addition, it was confirmed that 81.8% of the cases of T. tonsurans were of foreign origin, mainly from Haiti and Peru. 5 In another study, from Valparaíso region, an outbreak of T. tonsurans was also associated with school-age children, the vast majority of whom were Chilean. 6 These antecedents show that T. tonsurans is an emerging agent in our country.…”

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confidence: 95%

Trichophyton tonsuransin Chile: Genotyping in search of an origin

et al. 2021

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Trichophyton tonsurans is a cosmopolitan dermatophyte, highly prevalent in Africa, South America, and endemic in North America, where it is mostly related to cases of tinea capitis. Recently, it was also reported in Chile for the first time in two outbreaks occurred in Santiago. In the present study we sequenced the variable internal repeat (VIR) region of a Chilean isolate and compared its genotype with those of several global T. tonsurans isolates. The results showed that the Chilean isolate presented a new genotype which was strictly correlated with isolates from Europe, USA and Mexico.

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Estudio epidemiológico de la tinea capitis en una población de Santiago de Chile. La aparición de Trichophyton tonsurans como agente etiológico

Cited by 4 publications

References 14 publications

A systematic review of worldwide data on tinea capitis: analysis of the last 20 years

A systematic review of worldwide data on tinea capitis: analysis of the last 20 years

Brote de tiña por Trichophyton tonsurans en una escuela básica de Valparaíso, Chile

Trichophyton tonsuransin Chile: Genotyping in search of an origin

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