Supplementary Figure 1. Venn diagram
The Venn diagram shows the
interactions between different gut microbiota and the severity of
COVID-19. The circles represent mild COVID-19 (blue circle), moderate
COVID-19 (yellow circle) and severe COVID-19 (red circle). The numbers
in the circles represent the types of gut microbiota. The overlapping
areas between the circles represent the number of studies in which the
same type of gut microbiota was simultaneously involved in different
degrees of COVID-19 infection.