The fungal species richness and diversity reduced significantly in the pre-treatment group compared with the control and post-treatment groups. At the genus level, Aspergillus was more abundant in the pre-treatment group than the control and post-treatment groups, and Malassezia was more abundant in the control and post-treatment groups than the pre-treatment group. Aspergillus was identified as a main pathogenic fungus by microscopic examination, fungal culture, and ITS sequencing. The symptoms, including ear itching, aural fullness, otalgia, hearing loss, and physical signs were recorded before treatment as well as on the 7th and 14th days after treatment. Samples collected from 10 volunteers (Control, n = 20 ears) were used as controls. Samples collected from the external auditory canal before and after treatment (Pre-treatment, n = 14 ears Post-treatment, n = 14 ears) were used for microscopic examination, fungal culture, and ITS sequencing. Otomycosis patients were treated with bifonazole solution once a day for 14 days. Ten patients who visited the Department of Otolaryngology of Jiangsu Provincial Hospital on Integration of Chinese and Western Medicine from May 2020 to April 2021 were recruited. We used internal transcribed spacer (ITS) sequencing to identify the fungal community in otomycosis patients and to evaluate the treatment effects of bifonazole. 4Department of Otolaryngology-Head and Neck Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.3Department of Laboratory Medicine, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.2Department of Otolaryngology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.1Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.Xiaona Gu 1,2, Xiangrong Cheng 2, Jinhua Zhang 3 and Wandong She 1,4*
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