| ABM | Acute bacterial meningitis |
| CVA | Cerebrovascular accident |
| ICU | Intensive Care Unit |
| IPD | Invasive pneumococcal disease |
| MIC | Minimum inhibitory concentrations |
| RPM | Recurrent pneumococcal meningitis |
| PCV | Pneumococcal conjugate vaccine |
| PM | Pneumococcal meningitis |
| PPV | Pneumococcal polysaccharide vaccine |
| TBI | Traumatic brain injury |