One study reported that this bacteria has the following effects: limiting SARS‐CoV‐2 attachment to ACE‐2, suppressing inflammatory cytokines, and has antiapoptotic and antioxidant features, the same study concluded that lower presence of Collinsella was associated with high COVID‐19 mortality while its normal presence was significantly correlated to lower mortality rates among COVID‐19 patients.136. Here, ACE2 is linked to COVID-19.