Penicillin was first discovered by alexander fleming, and was further improved by British pathologist freire and German biochemist Ernst Boris ernst boris chain. It was successfully used to treat human diseases. Three people won the Nobel Prize in Physiology or Medicine.
With the discovery of penicillin, mankind has found a powerful bactericidal drug, ending the era when infectious diseases are almost incurable.
One reason why penicillin keeps ahead is that it is effective against many harmful microorganisms. The medicine can effectively treat syphilis, gonorrhea, scarlet fever, diphtheria, arthritis, bronchitis, meningitis, blood poisoning, bone infection, pneumonia, gangrene and other diseases.