About Louis Pasteur:
Born on December 27, 1822, in Dole, France, Louis Pasteur trained as a chemist and was famous for his studies on chirality (molecular handedness) in tartaric acid crystals, which laid groundwork for stereochemistry.
Louis Pasteur was raised in a devout Catholic family, remained a Catholic throughout his life, and famously integrated his deep faith in God the Creator with his scientific work, believing science actually brought one closer to God, not further away, famously stating, “The more I study nature, the more I stand amazed at the work of the Creator“. He frequently expressed awe at the complexity of nature, seeing it as evidence of a Creator. Pasteur is famous for the quote, “Too little science leads away from God, while too much science leads back to Him,” reflecting his view that deeper scientific understanding enhanced faith.
His most transformative contributions came in disproving spontaneous generation (which held that living organisms could regularly emerge from non-living matter, such as maggots from rotting meat or mice from moldy grain.
He developed pasteurization (heating liquids like milk, wine, and beer to kill harmful bacteria without ruining taste), a process that is still used worldwide today to make food and drinks safe.
His accomplishments cannot be over-stated: He proved microbes cause disease, helping shift medicine from miasma theory to modern hygiene and infection control. To say that his efforts saved the lives of millions (more likely hundreds of millions) of future human beings is certainly an under-statement.
Louis Pasteur created the first laboratory vaccines:
Attenuated (weakened) vaccine for fowl cholera (1879–1880).
Anthrax vaccine for sheep and cattle (1881) — dramatically demonstrated publicly at Pouilly-le-Fort
Rabies vaccine (1885) — his most famous; successfully used post-exposure to save 9-year-old Joseph Meister, who had been bitten by a rabid dog. Up until this time, almost all human exposure to rabies was fatal. This marked the birth of modern immunology and vaccination practices.
Pasteur’s rabies work led to the founding of the Institut Pasteur here in Paris (1887–1888), which continues as a leading global research center for infectious diseases.Often called the “father of microbiology,” “father of immunology,” and a key figure in the germ theory alongside Robert Koch, his rigorous experiments and practical applications saved countless lives and transformed agriculture, food safety, and medicine.
It should be pointed out that Pasteur did not accomplish this all on his own, key partners and collaborators in his later work (often referred to as the “five musketeers”) included:
Pierre Paul Émile Roux (1853–1933): A French physician and close assistant who helped with the rabies vaccine and public anthrax experiments.
Charles Chamberland (1851–1908): A French microbiologist who worked with Pasteur on anthrax vaccines and invented the Chamberland filter.
Emile Duclaux (1840–1904): A bacteriologist who served as the first director of the Pasteur Institute.
Joseph Lister (1827–1912): The British surgeon who adopted Pasteur’s germ theory to develop antiseptic surgery.
Marie Laurent Pasteur (1826–1910): His wife, who played a significant role as his assistant, secretary, and advisor throughout his career.
Following his death at the age of 72 in Saint-Cloud, France on September 28, 1895, a state funeral was held at Notre-Dame Cathedral. The government of France offered to have a state burial in the Pantheon; however, his wife, Marie Pasteur, declined the government’s offer. She believed her husband should rest in the institution he founded in 1888, where he could remain among his scientific work and colleagues. The crypt, initially a storage cellar, was redesigned by architects and artists to honor his contributions to science. The tomb is in a private crypt located beneath the apartment where Louis Pasteur lived the last seven years of his life, within the Institut Pasteur. The crypt is a beautifully designed, lavish mausoleum that resembles a chapel, decorated with intricate mosaics depicting Pasteur’s major scientific achievements, such as his work on fermentation, the rabies vaccine, and the diseases of silkworms. Both Louis Pasteur and his wife, Marie Pasteur, are entombed here.
About The Institut Pasteur in Paris, France:
Founded in 1887 and named after Louis Pasteur, as you might surmise, the Pasteur Institute is dedicated is a private, non-profit foundation dedicated to the study of biology, microorganisms, diseases, and vaccines. It focuses on four core missions: conducting, advancing, and promoting research on infectious diseases, cancer, and neurodegenerative diseases; education and training; improving global public health; and developing, applying, and transferring technology to combat disease.
The Pasteur Museum provides a fascinating insight into three aspects of the life and work of Louis Pasteur all in one place.After 30 years spent at the Ecole normale, in 1888 Louis Pasteur moved to a specially designed apartment at the Institut Pasteur, where he spent the last seven years of his life. The apartment that has since become the Pasteur Museum is remarkably evocative of the personality of its former occupant and rich in wonderfully preserved collections. The scientific souvenir room which traces his major discoveries based on the original scientific instruments he used.
Traveling to the Pasteur Institut in Paris, France:
The museum is currently closed to individual visitors for renovations until the end of 2028. It is developing a project to reopen with a new exhibit. As of previous information, group visits were the only option while individual access was restricted (a situation in place even before the current major renovation).
It’s recommended to check the official Institut Pasteur website for the latest information on potential group tour availability or future reopening dates.
Note: previously, visitors were required to present a passport or ID for admission to the museum and the Institute grounds.
Address: 25-28 Rue du Dr Roux, 75015 Paris
Phone: +33 1 45 68 80 00