Alexander Fleming was a Scottish bacteriologist and one of the greatest medical scientists in history. Born on 6 August 1881, he is best known for discovering penicillin in 1928. His discovery marked the beginning of the antibiotic era and revolutionized modern medicine. Penicillin became the first widely effective antibiotic used to treat bacterial infections. Fleming’s work helped save millions of lives around the world. His discovery greatly reduced deaths from infection

Louis Pasteur was a pioneering French scientist whose work transformed the fields of microbiology, chemistry, and modern medicine. He is best known for developing the germ theory of disease, which proved that microorganisms are responsible for many illnesses and infections. Pasteur introduced the process of pasteurization, making milk and other foods safer for consumption and greatly improving public health standards. His groundbreaking research also led to the creation of th