| CDC | Centers for Disease Control and Prevention |
| ECDC | European Centre for Disease Prevention and Control |
| HAI/HAIs | Healthcare-associated infection/healthcare-associated infections |
| ICU | Intensive Care Unit |
| IQR | Interquartile range |
| mCDC | Modified Centers for Disease Control and Prevention |
| SAP | Stroke-associated pneumonia |
| STROBE | Strengthening the Reporting of Observational Studies in Epidemiology |
| UTI | Urinary tract infection |