Question

What is a vaccine?

• A. A liquid containing dead pathogen
• B. A liquid containing a weakened pathogen
• C. A liquid containing a attenuated pathogen
• D. All of the above

Answer 1

The correct option is D

All of the above

Vaccines interact with the immune system and often produce an immune response similar to that produced by the natural infection, but they do not subject the recipient to the disease and its potential complications. So, for making vaccines a dead or weakened version of the pathogen is used which mimics the live pathogen but is unable to establish an infection.