If the disease was so easy to understand, it would have been solved already.
Histology is usually the most important clue.
Zollner, Andreas, et al. "Postacute COVID-19 is Characterized by Gut Viral Antigen Persistence in Inflammatory Bowel Diseases." Gastroenterology (2022).
Rediculous to think that intestinal inflammation is due to "COVID-19". Do you actually think that anyone with a functioning brain believes this?
Surprising comment.
Are you aware of the long covid research?
If the disease was so easy to understand, it would have been solved already.
Histology is usually the most important clue.
Zollner, Andreas, et al. "Postacute COVID-19 is Characterized by Gut Viral Antigen Persistence in Inflammatory Bowel Diseases." Gastroenterology (2022).
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057012/