IL6 and infection: After adjusting for potential confounders, there was no evidence that children with the highest infection burden, compared with children with low infection burden, were more likely to have high IL-6 (adjusted OR 1·13; 95% confidence interval (CI) 0·88–1·47) or high CRP (adjusted OR 1·02; 95% CI 0·77–1·34) levels at age 9 years (Table 2).