Question

how do you appreciate the role of vaccine in preventing disease

Answer 1

Vaccine contains some inactive viruses. When these inactive viruses are injected in our body, the WBCs attack those viruses since they consider those viruses as threats. The Memory T cells then, remember how to defend a particular virus which was injected in the body so the next time if the same virus tries to attack our body our immune system knows how to defeat that virus since it remembers the previous encounter with same virus( through injection). In this way vaccine actually strengthens our immunity and so we need to appreciate vaccine.

Hope this helps you.

Answer 2

heya..

Here is your answer...