CRP and inflammatory bowel disease: After COVID-19 infection, the majority of patients remained in clinical remission, whereas approximately 10% of the patients had a flare-up of IBD disease, with increased CRP and fecal calprotectin (CRP: 4.0 versus 8.00 mg/l, and fecal calprotectin: 165 versus 1,088 mcg/g) after COVID-19 infection.