A previously healthy 6-year-old boy presented with fever and neutropenia, initially suspected to have a bacterial infection. Blood cultures, however, grew a fungus identified as Talaromyces tumuli through internal transcribed spacer (ITS) sequencing. This marked the first documented case of fungemia caused by T. tumuli, a non-marneffei Talaromyces species, in an immunocompetent host. The patient was successfully treated with voriconazole. This case highlights the emergence of unusual fungal pathogens in individuals without traditional predisposing factors, necessitating advanced diagnostic techniques for accurate identification and appropriate management.
Key note: Non-marneffei Talaromyces species can cause invasive infections even in immunocompetent hosts.