Applying multiple logistic regression to the 373 patients with data on meningism and serum AST and ALT, the odds ratios (95% CI) for DRI (against all without known DRI) were 5.3 (1.5–18.4, P = 0.009), 0.99 (0.99–1.00, P = 0.15) and 0.99 (0.98–1.00, P = 0.223), respectively. This evidence concerns the gene GPT and infectious meningitis.