4
AssignmentMultiple Select

Chain of Infection

Question 4 • 2026-2027 EDGE Human Anatomy and Physiology A

Which of the following should not be shared in order to avoid the spread of blood-borne diseases? Check all that apply.

Answer
A
razors
B
toothbrushes
C
hairbrushes
D
needles for injections

Explanation

Razors, toothbrushes, and injection needles can carry traces of blood and should not be shared. Needles can transfer infected blood directly, while razors and toothbrushes may cause small cuts or gum bleeding. Hairbrushes do not ordinarily transmit blood-borne diseases, so they are not included.

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