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Sporothrix (order Ophiostomatales) comprises a genus with 53 species, of which S. brasiliensis , S. schenckii , S. globosa , and S. luriei cause skin infections in humans and other mammals. Remarkably, closely related Sporothrix can follow different strategies in epidemics. For example, during the cat-transmitted sporotrichosis, there is an increased prevalence of the highly virulent S. brasiliensis in South America, whereas S. schenckii and S. globosa are generally associated with a sapronotic route worldwide. Therefore, species-specific types of transmission may require distinct public health strategies to mitigate the advance of sporotrichosis, including early diagnosis, isolation of new animal cases, administration of adequate antifungal therapy, and population education on the main aspects of the disease. Here, we shed light on the system Sporothrix -sporotrichosis covering hot topics in the epidemiology and diagnosis of this important neglected disease.

Paracoccidioidomycosis (PCM) defines a broad spectrum of human and animal diseases caused by Paracoccidioides species (Onygenales). In the twenty-first century, Paracoccidioides advanced from a monotypic taxon to a genus that harbors seven species, including P. brasiliensis sensu stricto, P. americana , P. restrepiensis , P. venezuelensis , P. lutzii, P. loboi, and P. cetii . Classic PCM, acquired upon inhalation of propagules from P. brasiliensis sensu stricto, P. americana , P. restrepiensis , P. venezuelensis, and P. lutzii , affects the human lungs and may progress to systemic granulomatous disease with tegumentary and visceral involvement. On the other hand, PCM loboi and PCM ceti caused by the unculturable P. loboi and P. cetii are subcutaneous mycoses, typically observed as keloid lesions in humans and dolphins. Such heterogeneity highlights the importance of recognizing species boundaries in Paracoccidioides to gain insights into the ecology, evolution, clinical features, and mitigation strategies to tackle the advance of PCM.