A)sepsis.
B)bacteremia.
C)local infections.
D)septicemia.
E)systemic infections.

A)water
B)droplets from a sneeze
C)pus
D)insects
E)a hypodermic needle

A)They occur in compromised patients.
B)They may be caused by opportunists.
C)They may be caused by drug-resistant bacteria.
D)They may be caused by normal microbiota.
E)The patient was infected before hospitalization.