Final answer:
The medical term for the presence of bacteria in the bloodstream is bacteremia, which is a sign of infection and can lead to more severe conditions like septicemia and septic shock if not treated promptly.
Step-by-step explanation:
The medical term for the presence of bacteria in the bloodstream is bacteremia. This condition signifies an infection, as the circulatory system is typically sterile. Bacteria can enter through various means such as wounds, dental procedures, and medical equipment like catheters. When bacteremia involves rapidly multiplying bacteria it is known as septicemia, which is a more severe condition and can lead to serious systemic infections. The importance of a timely response to bacteremia cannot be overstated, as delays can allow for the spread throughout the body leading to life-threatening conditions such as sepsis and septic shock.