Fig. 1

a The CT median values and IQRs of human internal control gene RNAse P in group A (blue), group B (orange) are not statistically different (Kolmogorov–Smirnov Test p 0.09). b The CT median values and IQRs of human internal control gene RNAse P group A HCWs (grey) and group A no-HCWs (yellow) are not statistically different (Kolmogorov–Smirnov Test p 0.6)