Figure 5. Persistent fecal shedding in COVID -19 infection (A, Delayed, and weak Innate immune response due to lack of type I interferon response, decreased antigen presentation by dendritic cells, decreased NK cell lethality mediated by viral structural and nonstructural proteins. B, Later part of infection viral PAMPS recognized by bone marrow-derived immature dendritic cells translates into a resurgent adaptive immune response that is effective in limiting viral replication to the epithelial level and eventually causing viral clearance.)

From

Gastrointestinal Symptoms and Immune Response in COVID 19 - Review of a Cat and Mouse Game Theory

Abhilash Haridas, Payal Mukker

American Journal of Medical Case Reports. 2021, 9(1), 24-31 doi:10.12691/ajmcr-9-1-8