FIGURE 3.

Schematic summary of the gut microbiome alterations in COVID-19. A. The gut flora in healthy people are enriched with short-chain fatty acids (SCFAs) producing bacteria. While COVID-19 patients are frequently accompanied with prolonged gut microbial dysbiosis during and even after the disease course, with elevated abundance of opportunistic pathogens and decreased abundance of beneficial commensals. Reproduced with permission (Zuo et al., 2020c). Copyright 2020, American Gastroenterological Association.