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The COVID causing coronavirus enters the intestinal cells using angiotensin-converting enzyme 2 (ACE-2) protein as a receptor. Once inside it replicates and produces copies of its viral protein.
The majority of COVID-19-associated GI symptoms are mild and self-limiting and include anorexia, diarrhea, nausea, vomiting and abdominal pain/discomfort, says a report.
“Involvement of the GI tract may be due to direct viral injury and/or an inflammatory immune response and may lead to malabsorption, an imbalance in intestinal secretions and gut mucosal integrity and activation of the enteric nervous system,” it adds.
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