Question

What is vaccine ? Who invented vaccine

Answer 1

An antigenic substance prepared from the causative agent of of a disease or a synthetic substitute.
Invented by Edward Jenner

Answer 2

A vaccine is a substance that helps protect against certain diseases. Vaccines contain a dead or weakened version of a microbe. It helps your immune system recognize and destroy the living microbe during a future infection.

Vaccine was invented by Edward Jenner .