Fathers of Microbiology: Who Founded the Science and Why

Microbiology does not have a single founder. Different people are called the "father" of the field, or of one of its branches, for different reasons, which is why searches like "father of microbiology" and "father of bacteriology" return different names.

This article sets out who is credited with what, and why, so the titles stop being confusing.

Who is called the father of what

Title	Person	Why they are credited
Father of microbiology	Louis Pasteur	Showed microbes cause fermentation and disease, disproved spontaneous generation, made the first attenuated vaccines
Father of bacteriology / medical microbiology	Robert Koch	Proved specific bacteria cause specific diseases; developed pure culture and his postulates
Father of microscopy / first to see microbes	Antonie van Leeuwenhoek	First observed and described living microorganisms under a microscope
Father of immunology / vaccination	Edward Jenner (with Pasteur)	Jenner made the first vaccine (smallpox, 1796); Pasteur generalized attenuation
Father of antiseptic surgery	Joseph Lister	Applied germ theory to surgery, cutting deaths from infection

The five short profiles below explain each one.

Louis Pasteur, father of microbiology

Louis Pasteur (1822-1895), a French chemist, showed that fermentation and spoilage are caused by microbes, disproved spontaneous generation with his swan-neck flask, helped establish the germ theory of disease, invented pasteurization, and created the first vaccines made from weakened microbes (fowl cholera, anthrax, rabies).

Because his work founded so many parts of the field at once, he is most often called the father of microbiology in the broad sense. His full story is covered in the article on Louis Pasteur.

Robert Koch, father of bacteriology

Robert Koch (1843-1910), a German physician, proved that specific bacteria cause specific diseases, isolating the agents of anthrax, tuberculosis, and cholera. He developed the pure culture technique and the four criteria now known as Koch's postulates, which made the germ theory rigorous.

For this he is called the father of bacteriology and medical microbiology. His work is covered in the article on Robert Koch and Koch's postulates.

Antonie van Leeuwenhoek, father of microscopy

Antonie van Leeuwenhoek (1632-1723), a Dutch tradesman and lens maker, built simple microscopes powerful enough to see single-celled life. In the 1670s he was the first to observe and describe bacteria and protozoa, which he called "animalcules."

He is called the father of microbiology by some and the father of microscopy by others, because he was the first person to see the microbial world, long before anyone understood what it did.

Edward Jenner and vaccination

Edward Jenner (1749-1823), an English physician, introduced the first vaccine in 1796, using cowpox to protect against smallpox. His work predates Pasteur's by decades, and Pasteur later coined the word "vaccine" in his honor.

Jenner is often called the father of immunology or of vaccination, a title he shares with Pasteur, who generalized the method to other diseases.

Joseph Lister, father of antiseptic surgery

Joseph Lister (1827-1912), a British surgeon, took the germ theory into the operating room. Reasoning that microbes cause wound infection, he introduced antiseptic technique using carbolic acid, sharply reducing deaths after surgery. He is called the father of antiseptic surgery.

Is Koch or Pasteur the father of microbiology?

This is the most common source of confusion, so it is worth stating plainly. Both are founding fathers, of different things. Pasteur is called the father of microbiology in the broad sense: fermentation, germ theory, spontaneous generation, and vaccines.

Koch is called the father of bacteriology and medical microbiology: proving that specific bacteria cause specific diseases, and building the pure-culture methods and postulates that made that proof possible. When a source says "father of microbiology" without qualification, it usually means Pasteur; when it says "father of bacteriology," it means Koch.

References

1. Madigan MT, Bender KS, Buckley DH, Sattley WM, Stahl DA (2021). Brock Biology of Microorganisms. 16th edn. Pearson.
2. Willey JM, Sandman K, Wood D (2020). Prescott's Microbiology. 11th edn. McGraw-Hill Education.
3. Britannica. Louis Pasteur. Encyclopaedia Britannica. https://www.britannica.com/biography/Louis-Pasteur
4. Britannica. Robert Koch. Encyclopaedia Britannica. https://www.britannica.com/biography/Robert-Koch