DDX41 and infection: Correlation analysis by the non-parametric Spearman rank method did not show statistically significant correlations between the biochemical characteristics of Abs and clinical parameters of patients, except a positive correlation (0.04) between the period of infection and IgG2 content, a negative correlation (−0.03) between the period of infection and IgG1 content, and another negative correlation (−0.04) between the viral load and the level of amylolytic activity.