Subphenotypes of Long COVID and the clinical applications of probiotics.

Biomed Pharmacother

School of Medical and Life Sciences, Sunway University, Petaling Jaya, Selangor 47500, Malaysia. Electronic address:

Published: January 2025

As the number of infections and deaths attributable to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection continues to rise, it is now becoming apparent that the health impacts of the Coronavirus disease (COVID-19) may not be limited to infection and the subsequent resolution of symptoms. Reports have shown that patients with SARS-CoV-2 infection may experience multiple symptoms across different organ systems that are associated with adverse health outcomes and develop new cardiac, renal, respiratory, musculoskeletal, and nervous conditions, a condition known as Long COVID or the post-acute sequelae of COVID-19 (PASC). This review provides insights into distinct subphenotypes of Long COVID and identifies microbiota dysbiosis as a common theme and crucial target for future therapies. Another important finding is that Long COVID is associated with prolonged and increased inflammation, potentially attributable to immune system dysfunction. A promising solution lies in the potential of probiotics to mitigate Long COVID symptoms by restoring gut microbiota balance and modulating the immune response. By evaluating the current clinical development landscape of the use of probiotics to treat Long COVID symptoms, this paper provides recommendations for future research by stressing the need to understand the modulation of bacterium strains followed by probiotic therapy to understand the association of microbiota dysbiosis with Long COVID symptoms. This will facilitate the development of effective probiotic formulations that could serve as reliable therapies against Long COVID.

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http://dx.doi.org/10.1016/j.biopha.2025.117855DOI Listing

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