On the contrary, when applying an ML-based procedure, a set of variables is considered together (CSF neutrophils, NLR, albumin, and so on) in order to generate the predicted value of the response (that is, the type of meningitis), and then this prediction is compared with the observed value to compute the percentage of viral cases being correctly predicted and the percentage of bacterial cases being correctly predicted. This evidence concerns the gene ALB and infectious meningitis.