3
AssignmentMultiple Choice

Chain of Infection

Question 3 • 2026-2027 EDGE Human Anatomy and Physiology A

Which procedure effectively protects patients from many blood-borne pathogen infections?

Answer
A
washing hands after using the bathroom
B
wiping patients’ skin with an antiseptic solution
C
avoiding use of protective gloves and masks
D
screening of blood and blood products

Explanation

Screening donated blood and blood products helps detect blood-borne pathogens before they can be transmitted to patients through transfusions. This makes screening an effective way to prevent many such infections. Washing hands and cleaning skin help prevent some infections, but they do not protect against pathogens carried in transfused blood.

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