Final answer:
The normal cause of nosocomial UTI, wound infections, and bacteremia in the GI tract is bacteria.
Step-by-step explanation:
The normal cause of nosocomial UTI, wound infections, and bacteremia in the GI tract is bacteria. Specifically, bacteria that normally reside in the gastrointestinal tract can cause infections when they enter other body systems. For example, E.coli, which is normally found in the large intestine, can cause urinary tract infections when it enters the bladder.