Case 177. Reference case 177A

　 　 　 　
　 Macroconidium of zoophilic Microsporum canis on the culture plate (Cotton blue). An isolate from kerion Celci. 　
　 　 　 　

　

 　 Dermatophytes are categorized into three ecological groups. Anthropophilic (affecting human), zoophilic (affecting animals) and geophilic (saprophytes in the soil). Anthropophilic fungi, such as T. rubrum, cause chronic recurrent infection (including athlete's foot), while the latter two cause acute severe infection to human.