Question

2 . Jenner made small incisions or punctures with cowpox material in arms of human subjects in order to prevent smallpox If I infect someone with cowpox, they will then be immune to smallpox. 3. At first his peers doubted the safety and efficacy of his treatment, but eventually the value of the cowpox inoculum was recognized. 4. He saw that the people that he infected with cow pox, when later exposed to smallpox, would get a little bit sick, but never come down with a full-blown case of smallpox. Dr. Jenner was aware that farm workers believed that if you had ever contracted cowpox, you wouldn't get smallpox. Does having cowpox make a person immune to smallpox? From the on

us it to match in steps of scientific method
​

Answer 1

second option is right answer for this question

Answer 2

Having cowpox make the person immune to cowpox and smallpox simultaneously.

Explanation:

1. The virus causing the cowpox and smallpox is same and thus it is the reason that if a person is attacked with coxpox once become immune for smallpox also.
2. Our body develops memory cells after the first exposure which help us to fight the second infection and thus decrease the impact of second exposure.
3. Also due to same causative agent of coxpox and smallpox the memory cells developed during cowpox infection or vaccination, helps to fight the smallpox infection and save the person.