Question

It is known fact that milkmaids who had cowpox did not catch smallpox even during epidemics why it is so

Answer 1

Answer:

Explanation: smallpox vaccine was created by Edward Jenner in the late in the late 1700s he observed that maids who caught cowpox did not catch smallpox later

Answer 2

Answer:

smallpox vaccine was created by Edward Jenner in the late in the late 1700s he observed that maids who caught cowpox did not catch smallpox later