Question

Which among the following was the first vaccine ever to be developed?

• A. Cholera
• B. Smallpox
• C. Rabies
• D. Tetanus

Answer 1

Answer:

B. Smallpox

Smallpox vaccine was the first vaccine ever to be developed. Smallpox is an infectious disease which is caused by one of two virus variants, Variola major and Variola minor.