Infection Control · single question
All of the following are transmitted by the AIRBORNE route EXCEPT:
Show answer and explanation
Correct answer: A. Hepatitis B (HBV)
✓ A) Hepatitis B is the EXCEPTION — NOT airborne.
HBV is transmitted via blood-borne/parenteral routes: contaminated needles, blood transfusions, sexual contact, and mother-to-child transmission. It is NOT airborne. Airborne diseases (transmitted via droplet nuclei <5 microns that remain suspended in air): TB (Mycobacterium tuberculosis), varicella (chickenpox/VZV), and measles. Mumps is spread via respiratory droplets (not true airborne like TB, but droplet transmission). TB, VZV, and measles require airborne precautions (N95 mask, negative pressure room).
HBV is transmitted via blood-borne/parenteral routes: contaminated needles, blood transfusions, sexual contact, and mother-to-child transmission. It is NOT airborne. Airborne diseases (transmitted via droplet nuclei <5 microns that remain suspended in air): TB (Mycobacterium tuberculosis), varicella (chickenpox/VZV), and measles. Mumps is spread via respiratory droplets (not true airborne like TB, but droplet transmission). TB, VZV, and measles require airborne precautions (N95 mask, negative pressure room).
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