CRP and infection: Comparison of odds of viral vs bacterial meningitis using odds ratio showed that with each unit elevation of CRP level, the odds of bacterial meningitis will increase by a factor of 1.28 compared to that of viral meningitis (OR = 1.28, P = 0.002); however, no such association was observed with serum WBC (OR = 1.02, P = 0.73) with fairly similar odds for both types of infections (Table 2).