IL6 and congenital rubella syndrome: Similarly, no significant differences were observed when the IL-6 levels produced by the control group in response to all types of bacterial stimulation were compared to the CRS group, namely: BSA (P = 0.19), PCF (P = 0.11) and BCF, (with P-value equal 0.19, 0.11 and 0.26 respectively), (Fig. 4).