Which one of the following statements is not correct?
Detailed Explanation:
Answer: Option 2 — Hepatitis B, unlike Hepatitis C, does not have a vaccine.
This statement is incorrect because a highly effective vaccine for Hepatitis B has been available since 1982, whereas no vaccine exists for Hepatitis C. The question asks for the statement that is NOT correct.
✅ Statement 1 – Correct: Hepatitis B virus is transmitted through similar routes as HIV (blood contact, sexual contact, mother-to-child transmission).
❌ Statement 2 – Incorrect: Hepatitis B has a vaccine; Hepatitis C does not have a vaccine.
✅ Statement 3 – Correct: Globally, Hepatitis B and C infections combined far exceed HIV infections (approximately 325 million vs 38 million).
✅ Statement 4 – Correct: Chronic Hepatitis B and C infections can remain asymptomatic for many years before causing liver damage.
📝 Short Notes: Hepatitis B & C
| Feature | Hepatitis B | Hepatitis C |
|---|---|---|
| Vaccine Available | Yes (since 1982) | No |
| Transmission | Blood, sexual contact, mother-to-child | Primarily blood-to-blood contact |
| Global Prevalence | ~296 million chronic cases | ~58 million chronic cases |
| Chronic Infection Rate | 5-10% in adults | 75-85% develop chronic infection |
| Symptoms | Often asymptomatic for years | Often asymptomatic for years |
| Treatment | Antiviral drugs (suppress virus) | Direct-acting antivirals (can cure) |
Question 6 of 6 Vaccines and Immunization
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