On December 27, 1822, French chemist Louis Pasteur was born, who is considered one of the most important founders of medical microbiology. He is remembered for his remarkable breakthroughs in the causes and preventions of diseases.
On October 24, 1632, the Dutch tradesman and scientist Antonie van Leeuwenkoek, the inventor of the microscope, was born. He is commonly known as "the Father of Microbiology", and considered to be the first microbiologist.