Table 3 shows that there is no significant difference in C. difficile toxins detection was found between the two groups. Two cases in the nEOG had positive IgM antibodies against CMV, but CMV DNA was negative and intestinal mucosa pathology did not indicate CMV infection. EBV and T-SPOT test results were negative. The EOG had higher venous hemoglobin levels (118.95 ± 11.26 g/L) than the nEOG (107.93± 14.61 g/L; p = 0.017). This evidence concerns the gene CD40LG and cytomegalovirus infection.