Hepatitis B is transmitted through:

Appeared in: IGNOU PB Bsc Entrance-2022

Explanation

Hepatitis B virus (HBV) is primarily a bloodborne pathogen.
Transmission occurs through percutaneous (skin puncture) or mucosal contact with infected blood or body fluids like semen and vaginal secretions.
Major routes include sharing contaminated needles, unprotected sex, and perinatal transmission from an infected mother to her baby.
HBV can survive on environmental surfaces for at least 7 days, making indirect transmission possible through contaminated objects.

Option A: Contaminated water is a vehicle for fecal-oral transmission, which is the route for Hepatitis A and Hepatitis E, not Hepatitis B.
Option C: Droplet transmission involves respiratory secretions from coughing or sneezing. Hepatitis B is not an airborne or respiratory virus.
Option D: Contaminated food, like water, is associated with the fecal-oral transmission route characteristic of Hepatitis A and Hepatitis E.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Transmission route of Hepatitis B virus (HBV) as background academic context rather than a clinical decision trigger.
Understanding HBV transmission is critical for nurses to implement standard precautions and prevent occupational exposure (e.g., from needlestick injuries).
Nurses play a key role in patient education regarding HBV prevention, including vaccination, safe sex, and avoiding the sharing of personal items that could be contaminated with blood.
Hepatitis B vaccination is a cornerstone of public health and a mandatory safety measure for all healthcare professionals.

How to Approach the Question

This is a factual recall question testing knowledge of communicable diseases.
First, identify the specific pathogen in the question: 'Hepatitis B'.
Recall the primary modes of transmission for different types of viral hepatitis.
Evaluate each option against your knowledge. 'Water' and 'Infected food' are fecal-oral routes (Hepatitis A/E). 'Droplet' is a respiratory route.
Identify 'Blood' as the correct parenteral/bloodborne route for Hepatitis B.
Confirm the answer by eliminating the other incorrect options.

Concept Tested & Keywords

QnA4ZQLmCWXM43FEFSY8J_

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart B (pp 202-403 of 604) p. 66-68

E6 Medicine Harrison 22e Part 2 p. 556-558

E6 Microbiology Essentials Sastry 4e Part 2 p. 45-47

Practise the full IGNOU PB Bsc Entrance-2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.