Revealing the hidden interplay: the unexplored relationship between fungi and viruses beyond HIV, SARS-CoV-2 and influenza.

The complex interaction between viruses and fungi has profound implications, especially given the significant impact of these microorganisms on human health. While well-known examples such as HIV, influenza and SARS-CoV-2 are recognized as risk factors for invasive fungal diseases (IFD), the relationship between viruses and fungi remains largely underexplored outside of these cases. Fungi and viruses can engage in symbiotic or synergistic interactions. Remarkably, some viruses, known as mycoviruses, can directly infect fungi, may influencing their phenotype and potentially their virulence. In addition, viruses and fungi can coexist within the human microbiome, a complex ecosystem of microorganisms. Under certain conditions, viral infection might predispose the host to an invasive fungal infection, as observed with Influenza-associated pulmonary aspergillosis or COVID-19 associated pulmonary aspergillosis. We aim in this review to highlight potential connections between fungi and viruses (CMV and other herpesviruses, HTLV-1 and respiratory viruses), excluding SARS-CoV-2 and influenza. The link between invasive fungal diseases and certain viruses (HIV, SARS-CoV-2 and influenza) is now well established. For other viruses, however, the relationship remains uncertain. In this review, we aim to highlight associations between fungi and the expected HIV, SARS-CoV-2 and influenza.

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© The Author(s) 2024. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.