CRHR1 and infection: There is no statistically significant association between depressive mood and the other investigated risk factors, such as CRHR1 gene Exon 1/210/, Exon 1/229/, Exon 8, Exon 11, and Exon 14 CNVs; hypovitaminosis B12, B9, and D; or different antecedent infections (SARS-CoV-2; HSV-1; HSV-2; CMV; EBV; Hepatitis A, B, and C; and HIV) (Table 4).