Penicilin was discovered by Alexander Fleming in 1928. It was considered the fist antibiotic ever and the most used in worldwide.
Fleming left his laboratory for two weeks and left bacterial cultures that he was studying. When he came back, he realised one of his dishes had grown. While he was trying to random them to kill the bacteries by sinking them in a lysol back. A mold was growing up and it had destroyed the bacteries.
It was important to cure a lot of infections or ilnesses like syphilis or pneumonia. It's demonstrated that without penicilin, now a days, there would be so much more deaths due to ear ache, stomach ache...etc. These diseases are very easy to cure today.
Today, anthibiotics can just be taken with a medical prescription because if you digest it more than you need, you will can die or you'll have bad diseases.
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