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Summary Background Microsporum canis is a zoophilic species, found to be the most frequently isolated species in animals. M. canis causes sporadic outbreaks of infections in humans, such as the one that occurred in Canada, where more than 1000 human cases were detected over an 8‐year period. Despite the medical importance of M. canis infections, there are limited in vitro data on the antifungal susceptibility to antifungal drugs, including new generation triazoles and imidazoles. Objective The aim of the current study was to comprehensively evaluate the in vitro activity of new azoles and comparator drugs against a large panel of M. canis isolates using a microdilution assay. Methods The in vitro susceptibility to novel triazoles and imidazoles was compared to that of other antifungal drugs using a large collection of M. canis clinical isolates (n = 208) obtained from patients and animals with dermatophytosis in Iran, France and Turkey. Results All isolates exhibited high susceptibility to the majority of the tested antifungal agents. However, luliconazole, lanoconazole and efinaconazole, as well as econazole, demonstrated superior activity against all strains in comparis on with the other drugs. Conclusion FDA‐approved antifungal drugs, that is luliconazole, efinaconazole and lanoconazole, showed the highest antifungal activity and should be promising candidates for the treatment of dermatophytosis caused by M canis. However, their therapeutic effectiveness remains to be determined in clinical settings.

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Background: Fungi are regarded as one of causal factors of respiratory allergies and are a serious threat to public health in indoor environments. Before conclusively identifying fungi as the major causative agent of all or some types of rhinitis, we should have a good knowledge of the fungal flora of the nasal cavity and indoor building environments of healthy subjects. Objectives: The aim of this study was to determine the presence and relative abundance of fungal flora in the nasal cavity and bedroom of healthy subjects in Mashhad city, north east of Iran. Patients and Methods: A group of fifty healthy volunteers without a history of respiratory system diseases were selected. Samples from the nasal cavity and different parts of the bedroom including indoor air, pillow, mattress, blanket, dust of the bed, dust of the shelf and dust of the air duct were collected and cultured. The fungi were identified by standard mycological techniques. Results: The most common fungi isolated from all samples were Aspergillus, Penicillium, Yeast, Alternaria and Cladosporium. Stemphylium, Ulocladium, Stachybotrys, Basidiobolus and Exophiala showed the least frequencies among the isolated fungi. Conclusions:The presence of fungi in the nasal cavity and indoors of healthy subjects in this study suggests that fungi should be considered as health hazards. Furthermore, it is important and seems necessary to monitor indoor air quality and raise awareness of existing threats due to microorganisms, including fungi.