Discussion
A vaccine against hepatitis A is practical largely because the virus has
Answer: C
Correct answer: a single serotype
A vaccine works by raising antibody against the antigens of the strain it contains, so a virus with many serotypes needs a vaccine with many components, or none at all. Hepatitis A has exactly one worldwide, so a single inactivated preparation protects against every isolate, and immunity is durable. That is why an effective hepatitis A vaccine exists and a common cold vaccine does not.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development