Question

Jenner prepared vaccine for small pox virus by employing

• A. Attenuated small pox virus
• B. Small doses of small pox virus
• C. Attenuated cow's pox virus
• D. Large doses of small pox virus

Answer 1

The correct option is C Attenuated cow's pox virus

Vaccination is the administration of antigenic material (a vaccine) to stimulate an individual's immune system to develop adaptive immunity to a pathogen. Edward Jenner administered the world’s first vaccination as a preventive treatment for smallpox. He took fluid from a cowpox blister, attenuated the cowpox virus and introduced it into the skin of James Phipps, an eight-year-old boy who is suffering from smallpox. A single blister rose up on the spot, but James soon recovered.

So, the correct answer is 'Attenuated cow's pox virus'.