Which of the Following is NOT an Exogenous Source of Hospital-Acquired

Question

Which of the following is NOT an exogenous source of hospital-acquired infection?
A)Other patients.
B)The patient's own microbiota.
C)The hospital environment.
D)A contaminated fluid for injection.
E)The hands of staff.

Accepted Answer

The patient's own microbiota is not considered an exogenous source of hospital-acquired infection as it originates from the patient's body and is not introduced from an external source. The other choices all represent exogenous sources, introduced from outside the patient's own body.