Edward Jenner ( Science )

Edward Jenner was a doctor in England, he made a smallpox vaksin first in the world on 1796 .He wanted to make an observation about a person who was infected by the smallpox and the one who not infected, so he decided to take the pus or the suppuration from a girl that was infected by the smallpox and put it in into a healthy child or even a baby. Its function is to help those child or baby can't be infected!! But there's a 20 years old guy, try this smallpox vaksin but he dies, this vaksin also have side effects.'WHY IT CAN CAUSE THE SIDE EFFECTS? ' because , there's a reaction shaped like allergies on the ingredient of making the phatogens. So, if we are allergic with something or hot and we're not to healthy we may not being vaksin! And also guys, vaksin not nessesarilly can help you to be healthy !!

PS. Hope this can help guysz!! Gonna share more !! Please follow, like and leave a comment!!