Question

Jenner prepared a vaccine for smallpox virus by employing

Answer 1

Introduction to vaccination-

• The principle of immunisation or vaccination is based on the property of the immune system to retain memory.
• In the preparation of vaccines, killed, inactivated/weakened pathogens or antigenic proteins of pathogens are introduced in the body.
• The antibodies produced in the body against these antigens would neutralise the pathogenic agents during actual infection.
• The vaccines also generate memory B and T-cells that recognize the pathogen quickly on subsequent exposure and attack the invaders with a massive production of antibodies.

Smallpox vaccine-

Edward Jenner developed the vaccine against smallpox by using live but weakened or attenuated cowpox viruses.