Question

Who discovered ‘vaccine’ for the first time? Name the two diseases which can be prevented by using vaccines?

Answer 1

Explanation:

In 1796, the British doctor Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpox virus. Cowpox served as a natural vaccine until the modern smallpox vaccine emerged in the 19th century.

Answer 2

Answer:

Edward Jenner discovered the first vaccine for hepatitis B virus.

Mumps, measles, polio , small pox

note: small pox can affect someone even if they had a vaccine