Bacteria can enter the bloodstream through various "entry points" or underlying infections:

: Localized infections like pneumonia , urinary tract infections (UTIs), and cellulitis can spread to the blood.

Healthcare providers diagnose the condition primarily through , which identify the specific type of bacteria present. Doctors at Cleveland Clinic note that diagnosis often involves taking two sets of cultures to ensure accuracy. Bacteraemia vs. Sepsis vs. Septicemia

These terms are related but have distinct clinical meanings: