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The Pasteur Institute (, ) is a French
non-profit A nonprofit organization (NPO), also known as a nonbusiness entity, nonprofit institution, not-for-profit organization, or simply a nonprofit, is a non-governmental (private) legal entity organized and operated for a collective, public, or so ...
private foundation dedicated to the study of
biology Biology is the scientific study of life and living organisms. It is a broad natural science that encompasses a wide range of fields and unifying principles that explain the structure, function, growth, History of life, origin, evolution, and ...
,
micro-organism A microorganism, or microbe, is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells. The possible existence of unseen microbial life was suspected from antiquity, with an early attestation in ...
s,
disease A disease is a particular abnormal condition that adversely affects the structure or function (biology), function of all or part of an organism and is not immediately due to any external injury. Diseases are often known to be medical condi ...
s, and
vaccine A vaccine is a biological Dosage form, preparation that provides active acquired immunity to a particular infectious disease, infectious or cancer, malignant disease. The safety and effectiveness of vaccines has been widely studied and verifi ...
s. It is named after
Louis Pasteur Louis Pasteur (, ; 27 December 1822 – 28 September 1895) was a French chemist, pharmacist, and microbiologist renowned for his discoveries of the principles of vaccination, Fermentation, microbial fermentation, and pasteurization, the la ...
, who invented
pasteurization In food processing, pasteurization (American and British English spelling differences#-ise, -ize (-isation, -ization), also pasteurisation) is a process of food preservation in which packaged foods (e.g., milk and fruit juices) are treated wi ...
and
vaccines A vaccine is a biological preparation that provides active acquired immunity to a particular infectious or malignant disease. The safety and effectiveness of vaccines has been widely studied and verified. A vaccine typically contains an ag ...
for
anthrax Anthrax is an infection caused by the bacterium '' Bacillus anthracis'' or ''Bacillus cereus'' biovar ''anthracis''. Infection typically occurs by contact with the skin, inhalation, or intestinal absorption. Symptom onset occurs between one ...
and
rabies Rabies is a viral disease that causes encephalitis in humans and other mammals. It was historically referred to as hydrophobia ("fear of water") because its victims panic when offered liquids to drink. Early symptoms can include fever and abn ...
. The institute was founded on 4 June 1887 and inaugurated on 14 November 1888. For over a century, the Institut Pasteur has researched
infectious disease An infection is the invasion of tissue (biology), tissues by pathogens, their multiplication, and the reaction of host (biology), host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmis ...
s. This worldwide
biomedical Biomedicine (also referred to as Western medicine, mainstream medicine or conventional medicine)
research organization based in
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
was the first to isolate
HIV The human immunodeficiency viruses (HIV) are two species of '' Lentivirus'' (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the im ...
, the virus that causes
AIDS The HIV, human immunodeficiency virus (HIV) is a retrovirus that attacks the immune system. Without treatment, it can lead to a spectrum of conditions including acquired immunodeficiency syndrome (AIDS). It is a Preventive healthcare, pr ...
, in 1983. It has also been responsible for discoveries that have enabled medical science to control diseases such as
diphtheria Diphtheria is an infection caused by the bacteria, bacterium ''Corynebacterium diphtheriae''. Most infections are asymptomatic or have a mild Course (medicine), clinical course, but in some outbreaks, the mortality rate approaches 10%. Signs a ...
,
tetanus Tetanus (), also known as lockjaw, is a bacterial infection caused by ''Clostridium tetani'' and characterized by muscle spasms. In the most common type, the spasms begin in the jaw and then progress to the rest of the body. Each spasm usually l ...
,
tuberculosis Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, is a contagious disease usually caused by ''Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can al ...
,
poliomyelitis Poliomyelitis ( ), commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 75% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe ...
,
influenza Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These sympto ...
, yellow fever, and plague. Since 1908, ten Institut Pasteur scientists have been awarded the
Nobel Prize The Nobel Prizes ( ; ; ) are awards administered by the Nobel Foundation and granted in accordance with the principle of "for the greatest benefit to humankind". The prizes were first awarded in 1901, marking the fifth anniversary of Alfred N ...
for medicine and
physiology Physiology (; ) is the science, scientific study of function (biology), functions and mechanism (biology), mechanisms in a life, living system. As a branches of science, subdiscipline of biology, physiology focuses on how organisms, organ syst ...
—the 2008
Nobel Prize in Physiology or Medicine The Nobel Prize in Physiology or Medicine () is awarded yearly by the Nobel Assembly at the Karolinska Institute for outstanding discoveries in physiology or medicine. The Nobel Prize is not a single prize, but five separate prizes that, acco ...
was shared between two Pasteur scientists.


History

The Institut Pasteur was founded in 1887 by the French chemist and microbiologist Louis Pasteur. He was committed both to basic research and its practical applications. From the start, Pasteur brought together scientists with various specialties. The first five departments were directed by two ''normaliens'' (graduates of the
École Normale Supérieure École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing i ...
),
Émile Duclaux Émile Duclaux (24 June 1840 – May 2, 1904) was a French microbiologist and chemist born in Aurillac, Cantal. He studied at the College of Aurillac, the Lycée Saint-Louis in Paris and at École Normale Supérieure. In 1862 he began work as ...
(general microbiology research) and
Charles Chamberland Charles Edouard Chamberland (; 12 March 1851 – 2 May 1908) was a French microbiologist from Chilly-le-Vignoble in the department of Jura who worked with Louis Pasteur. Chamberland was present at Pouilly-le-Fort when the efficacy of the anthr ...
(microbes research applied to hygiene), a biologist,
Ilya Ilyich Mechnikov Ilya, Iliya, Ilia, Ilja, Ilija, or Illia ( , or ; ; ) is the East Slavic form of the male Hebrew name Eliyahu (Eliahu), meaning "My God is Yahu/ Jah." It comes from the Byzantine Greek pronunciation of the vocative (Ilía) of the Greek Eli ...
(morphological microbe research), and two physicians,
Jacques-Joseph Grancher Jacques-Joseph Grancher (; 29 September 1843 in Felletin, Creuse – 13 July 1907) was a French pediatrician born in Felletin. In 1862 he began his medical studies in Paris, where he worked as an assistant at the Hôpital des Enfants Malad ...
(rabies) and
Emile Roux Emile or Émile may refer to: * Émile (novel) (1827), autobiographical novel based on Émile de Girardin's early life * Emile, Canadian film made in 2003 by Carl Bessai * '' Emile: or, On Education'' (1762) by Jean-Jacques Rousseau, a treatise o ...
(technical microbe research). One year after the inauguration of the Institut Pasteur, Roux set up the first course of microbiology ever taught in the world, ''Cours de Microbie Technique'' (Course of microbe research techniques). Pasteur's successors have sustained this tradition, which is reflected in the Institut Pasteur's unique history of accomplishment: * Emile Roux and
Alexandre Yersin Alexandre Émile John Yersin (22 September 1863 – 1 March 1943) was a Swiss- French physician and bacteriologist. He is remembered as the co-discoverer (1894) of the bacillus responsible for the bubonic plague or pest, which was later named in ...
discovered the mechanism of action of ''
Corynebacterium diphtheriae ''Corynebacterium diphtheriae'' is a Gram-positive pathogenic bacterium that causes diphtheria. It is also known as the Klebs–Löffler bacillus because it was discovered in 1884 by German bacteriologists Edwin Klebs (1834–1912) and Friedrich ...
'' and how to treat diphtheria with
antitoxin An antitoxin is an antibody with the ability to neutralize a specific toxin. Antitoxins are produced by certain animals, plants, and bacterium, bacteria in response to toxin exposure. Although they are most effective in neutralizing toxins, the ...
s *
Alexandre Yersin Alexandre Émile John Yersin (22 September 1863 – 1 March 1943) was a Swiss- French physician and bacteriologist. He is remembered as the co-discoverer (1894) of the bacillus responsible for the bubonic plague or pest, which was later named in ...
discovered in 1894 the pathogen of
bubonic plague Bubonic plague is one of three types of Plague (disease), plague caused by the Bacteria, bacterium ''Yersinia pestis''. One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and ...
, ''
Yersinia pestis ''Yersinia pestis'' (''Y. pestis''; formerly ''Pasteurella pestis'') is a Gram-negative bacteria, gram-negative, non-motile bacteria, non-motile, coccobacillus Bacteria, bacterium without Endospore, spores. It is related to pathogens ''Yer ...
'' *
Paul-Louis Simond Paul-Louis Simond (30 July 1858 – 3 March 1947) was a French physician, chief medical officer and biologist whose major contribution to science was his demonstration that the intermediates in the transmission of bubonic plague from rats to ...
discovered in 1898 the role of the
flea Flea, the common name for the order (biology), order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds. Fleas live by hematophagy, ingesting the blood of their hosts. Adult f ...
in the transmission of plague *
Albert Calmette Léon Charles Albert Calmette ForMemRS (; 12 July 1863 – 29 October 1933) was a French physician, bacteriologist and immunologist, and an important officer of the Pasteur Institute. He co-discovered the Bacillus Calmette-Guérin, an attenuat ...
and
Camille Guérin Jean-Marie Camille Guérin (; 22 December 18729 June 1961) was a French veterinarian, bacteriologist and immunologist who, together with Albert Calmette, developed the Bacillus Calmette–Guérin (BCG), a vaccine for immunization against tuber ...
discovered how to culture the
tuberculosis Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, is a contagious disease usually caused by ''Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can al ...
bacillus, ''
Mycobacterium tuberculosis ''Mycobacterium tuberculosis'' (M. tb), also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. First discovered in 1882 by Robert Koch, ''M. tuberculosis'' ha ...
'' (so-called BCG or
Bacillus Calmette-Guérin The Bacillus Calmette–Guérin (BCG) vaccine is a vaccine primarily used against tuberculosis (TB). It is named after its inventors Albert Calmette and Camille Guérin. In countries where tuberculosis or leprosy is common, one dose is recom ...
) at
Institut Pasteur de Lille The Pasteur Institute of Lille () is a research centre and member of the Pasteur Institute network. It includes 14 research units and 1,150 employees including 626 researchers located in Lille, France. There are also 300 employees located outside ...
, and developed in 1921 the first effective anti-tuberculosis vaccine *
Alphonse Laveran Charles Louis Alphonse Laveran (18 June 1845 – 18 May 1922) was a French physician who won the Nobel Prize in Physiology or Medicine in 1907 for his discoveries of parasitic protozoans as causative agents of infectious diseases such as malaria ...
received the 1907 Nobel Prize for his research on the role of
protozoans Protozoa (: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic debris. Historically ...
as disease agents (notably, his discovery of the
malaria Malaria is a Mosquito-borne disease, mosquito-borne infectious disease that affects vertebrates and ''Anopheles'' mosquitoes. Human malaria causes Signs and symptoms, symptoms that typically include fever, Fatigue (medical), fatigue, vomitin ...
hematozoon) *
Ilya Ilyich Mechnikov Ilya, Iliya, Ilia, Ilja, Ilija, or Illia ( , or ; ; ) is the East Slavic form of the male Hebrew name Eliyahu (Eliahu), meaning "My God is Yahu/ Jah." It comes from the Byzantine Greek pronunciation of the vocative (Ilía) of the Greek Eli ...
received the Nobel Prize in 1908 for contributions to the scientific understanding of the
immune system The immune system is a network of biological systems that protects an organism from diseases. It detects and responds to a wide variety of pathogens, from viruses to bacteria, as well as Tumor immunology, cancer cells, Parasitic worm, parasitic ...
*
Constantin Levaditi Constantin Levaditi (1 August 1874 – 5 September 1953) was a Romanian physician and microbiologist, a major figure in virology and immunology, especially in the study of poliomyelitis and syphilis. Biography Constantin Levaditi was born in Ga ...
and
Karl Landsteiner Karl Landsteiner (; 14 June 1868 – 26 June 1943) was an Austrian-American biologist, physician, and immunologist. He emigrated with his family to New York in 1923 at the age of 55 for professional opportunities, working for the Rockefeller ...
demonstrated in 1910 that
poliomyelitis Poliomyelitis ( ), commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 75% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe ...
is due to a filterable virus *
Félix d'Herelle Felix may refer to: * Felix (name), people and fictional characters with the name Places * Arabia Felix is the ancient Latin name of Yemen * Felix, Spain, a municipality of the province Almería, in the autonomous community of Andalusia, ...
discovered in 1917 the
bacteriophage A bacteriophage (), also known informally as a phage (), is a virus that infects and replicates within bacteria. The term is derived . Bacteriophages are composed of proteins that Capsid, encapsulate a DNA or RNA genome, and may have structu ...
, a virus that spread only inside bacteria *
Jules Bordet Jules Jean Baptiste Vincent Bordet ( , ; 13 June 1870 – 6 April 1961) was a Belgian immunologist and microbiologist. The bacterial genus ''Bordetella'' is named after him. The Nobel Prize in Physiology or Medicine was awarded to him in 1919 ...
received the Nobel prize in 1919 for his discoveries on
immunity Immunity may refer to: Medicine * Immunity (medical), resistance of an organism to infection or disease * ''Immunity'' (journal), a scientific journal published by Cell Press Biology * Immune system Engineering * Radiofrequence immunity ...
, especially the implication of
antibodies An antibody (Ab) or immunoglobulin (Ig) is a large, Y-shaped protein belonging to the immunoglobulin superfamily which is used by the immune system to identify and neutralize antigens such as bacteria and viruses, including those that caus ...
and the
complement system The complement system, also known as complement cascade, is a part of the humoral, innate immune system and enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism, promote inf ...
′s mechanisms of action *
Charles Nicolle Charles Jules Henri Nicolle (21 September 1866 – 28 February 1936) was a French bacteriologist who received the Nobel Prize in Medicine for his identification of lice as the transmitter of epidemic typhus. Family Nicolle was born to Aline Lo ...
received the Nobel prize in 1928 for explaining how
typhus Typhus, also known as typhus fever, is a group of infectious diseases that include epidemic typhus, scrub typhus, and murine typhus. Common symptoms include fever, headache, and a rash. Typically these begin one to two weeks after exposu ...
is transmitted, especially the role of the
louse Louse (: lice) is the common name for any member of the infraorder Phthiraptera, which contains nearly 5,000 species of wingless parasitic insects. Phthiraptera was previously recognized as an order (biology), order, until a 2021 genetic stud ...
* Jean Laigret developed the first vaccine for yellow fever in 1932. *
André Lwoff André — sometimes transliterated as Andre — is the French and Portuguese form of the name Andrew and is now also used in the English-speaking world. It used in France, Quebec, Canada and other French-speaking countries, as well in Portugal ...
established the existence of
provirus A provirus is a virus genome that is integrated into the DNA of a host cell. In the case of bacterial viruses (bacteriophages), proviruses are often referred to as prophages. However, proviruses are distinctly different from prophages and these te ...
es in 1951, and the work honored by the 1965 Nobel Prize. *
Jacques Monod Jacques Lucien Monod (; 9 February 1910 – 31 May 1976) was a French biochemist who won the Nobel Prize in Physiology or Medicine in 1965, sharing it with François Jacob and André Lwoff "for their discoveries concerning genetic control of e ...
and Francois Jacob discovered the mechanism of genes'
transcription regulation In molecular biology and genetics, transcriptional regulation is the means by which a cell regulates the conversion of DNA to RNA ( transcription), thereby orchestrating gene activity. A single gene can be regulated in a range of ways, from alt ...
, a work honored by the 1965 Nobel Prize * Pierre Lépine developed in 1955 one of the first anti-polio vaccines *
Jean-Pierre Changeux Jean-Pierre Changeux (; born 6 April 1936) is a French neuroscientist known for his research in several fields of biology, from the structure and function of proteins (with a focus on the allosteric proteins), to the early development of the ner ...
isolated the first receptor to a
neurotransmitter A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a Chemical synapse, synapse. The cell receiving the signal, or target cell, may be another neuron, but could also be a gland or muscle cell. Neurotra ...
, the acetylcholine receptor in 1970. * Luc Montagnier, Françoise Barré-Sinoussi and colleagues discovered the two HIV viruses that cause
AIDS The HIV, human immunodeficiency virus (HIV) is a retrovirus that attacks the immune system. Without treatment, it can lead to a spectrum of conditions including acquired immunodeficiency syndrome (AIDS). It is a Preventive healthcare, pr ...
in 1983 and 1985; Montagnier and Barré-Sinoussi were honored by the 2008 Nobel Prize A new age of preventive medicine in France was made possible by the Institut Pasteur's (early 20th century) development of vaccines for
tuberculosis Tuberculosis (TB), also known colloquially as the "white death", or historically as consumption, is a contagious disease usually caused by ''Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can al ...
,
diphtheria Diphtheria is an infection caused by the bacteria, bacterium ''Corynebacterium diphtheriae''. Most infections are asymptomatic or have a mild Course (medicine), clinical course, but in some outbreaks, the mortality rate approaches 10%. Signs a ...
,
tetanus Tetanus (), also known as lockjaw, is a bacterial infection caused by ''Clostridium tetani'' and characterized by muscle spasms. In the most common type, the spasms begin in the jaw and then progress to the rest of the body. Each spasm usually l ...
, yellow fever and
poliomyelitis Poliomyelitis ( ), commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 75% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe ...
. The discovery and use of Sulfonamide (medicine), sulfonamides in treating infections were another of its earlier breakthroughs. Some researchers discovered
antitoxin An antitoxin is an antibody with the ability to neutralize a specific toxin. Antitoxins are produced by certain animals, plants, and bacterium, bacteria in response to toxin exposure. Although they are most effective in neutralizing toxins, the ...
s, while Daniel Bovet received the 1957 Nobel Prize for his discoveries on synthetic anti-histamines and curare, curarizing compounds. Since World War II, Pasteur researchers have focused on molecular biology. Their achievements were recognized in 1965, when the Nobel Prize was shared by François Jacob,
Jacques Monod Jacques Lucien Monod (; 9 February 1910 – 31 May 1976) was a French biochemist who won the Nobel Prize in Physiology or Medicine in 1965, sharing it with François Jacob and André Lwoff "for their discoveries concerning genetic control of e ...
and
André Lwoff André — sometimes transliterated as Andre — is the French and Portuguese form of the name Andrew and is now also used in the English-speaking world. It used in France, Quebec, Canada and other French-speaking countries, as well in Portugal ...
for their work on the regulation of viruses. In 1985, the first human vaccine obtained by genetic engineering from animal cells, the vaccine against hepatitis B, was developed by Pierre Tiollais and collaborators.


Opening

The center against rabies, directed by Jacques-Joseph Grancher and Émile Roux, had become so overcrowded that it became necessary to build a structure that Pasteur had been calling with the name "Institute Pasteur" long before it was even built. Pasteur delegated the task of the project and of creating the new building, situated on rue Dutot, to two of his colleagues, Grancher and Emile Duclaux. From the beginning, the Institute experienced economical difficulties for which it needed the help of the government, some foreign rulers, and Madame Boucicaut, but this aid did not affect its independence. The statutes drawn by Pasteur and later approved by Duclaux and Grancher define, besides its absolute freedom and independence, the institute's internal structure: a rabies division controlled by Grancher, anthrax one in Charles Chamberland, Chamberland's hands, who also supervised the department of microbiology, while Emile Roux dealt with microbial methods applied to medicine.


World War I and World War II

During the First World War, the Pasteur institute prioritized vaccinating troops against the easily contractable typhoid fever. By September 1914, the institute was able to provide 670,000 doses of the vaccine and continued to produce it throughout the conflict. Gabriel Bertrand, with Roux's authorization, crafted a grenade based on chloropicrin and Ernest Fourneau, Fourneau discovered the chemical reaction that led to the formation of methylarsine chloride. In 1921, Albert Simard edited the ''La réaction de fixation de l'alexine: son application au diagnostic sérologique de la peste,'' "work of the Pasteur Institute in Paris, plague laboratory." In 1938 the institute, despite its relative poverty, built a biochemical division and another one dedicated to cellular pathology, whose direction was entrusted to the hands of Boivin (who went on to discover endotoxins that are contained in the germ's body and are freed after its death). During the same period, Andre Lwoff assumed the direction of a new microbial physiology branch built on rue Dutot. The general mobilization after France's declaration of war against Germany, in September 1939, emptied the Institute and significantly reduced its activities, as members of appropriate age and condition were recruited into the army, but the almost total absence of battles during the first months of the conflict helped maintain the sanitary situation on the front. After the occupation of France, the Germans never tried to gather information from the institute's research; their confidence in Germany's advantage in this field decreased their curiosity, and their only interest was in the serums and vaccines that it could provide to their troops or the European auxiliaries they recruited. This relative freedom allowed the institute to become, during the two years after the occupation, a pharmacy for the Resistance thanks to the initiative of Vallery-Radot, Pasteur's nephew. The Germans became suspicious of the institute's staff only after an outbreak of typhoid in a Wehrmacht division that was stationed near Paris before being sent to the Russian front. The cause of the epidemic was later found to be due to a member of the Institute stealing a culture of the germ responsible for the disease and, with the collaboration of an accomplice, infecting a large quantity of butter used to feed German troops. The fact that the epidemic spread after the Germans sold some of the butter to civilians was proof that the illness's breakout was not caused by local water quality. Afterward, the German authorities ordered that the institute's stores containing microbial cultures could be opened only by authorized members; similar security problems also induced them to demand complete lists of the staff's names and functions; missing names caused the Germans to send two biologists, Dr. Wolmann and his wife, as well as other three lab assistants, to a concentration camp. The institute was not a location for German entrenchment even during the battles for Paris's liberation because of the honor and respect it commanded, as well as out of fear that involving it in any type of conflict might "free the ghosts of long defeated diseases".


Economical difficulties during the 1970s

At the end of 1973, the institute's economic status was so worrisome that its troubles aroused the public's interest: no one could believe that an institution that was to provide vaccines and serums for more than fifty million people could be undergoing such big financial problems, an institution that furthermore was believed to be under government protection and therefore shielded from bankruptcy. The causes of the decadence that brought the institute to financial ruin were numerous, but most of them were associated with its commercial and industrial activities and its management. This affected both the research and production branch: the research branch didn't receive enough funds and the production branch, which was losing market ground to the new private labs, was immobilized by the antiquated mechanical equipment. In 1968 rabies reappeared in France after being previously eradicated in 1924. Despite the fact that it owed its original celebrity to the discovery of the rabies vaccine, the Pasteur institute was ultimately replaced by other pharmaceutical industries in the production of the vaccines. Despite the Pasteur institute's financial troubles, its members were able to produce over 400,000 doses of vaccine against the Hong Kong influenza later that year. In 1971
Jacques Monod Jacques Lucien Monod (; 9 February 1910 – 31 May 1976) was a French biochemist who won the Nobel Prize in Physiology or Medicine in 1965, sharing it with François Jacob and André Lwoff "for their discoveries concerning genetic control of e ...
announced a new era of modernization and development: this was symbolized by the construction of a new factory where all the production departments were to be reunited. Its construction cost forty-five million francs and the Government granted the institute a sum of twenty million francs to bridge the deficit, followed by the people's initiative to also accept a role in the division of the financial responsibilities.


COVID-19 pandemic

Pasteur was the first institute in Europe to culture and sequence the genome of what was later named the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which caused the COVID-19 pandemic, on 29 January 2020. The institute deposited the complete sequences of the virus samples taken from two of the first French cases on the GISAID database platform. The institute has also been involved in research and development of COVID-19 testing, testing and epidemiological modelling, including in COVID-19 pandemic in Africa, Africa via its network institutions. In 2020, Pasteur were involved in the development of a COVID-19 vaccine in partnership with Merck & Co., but this was abandoned in January 2021 after unsuccessful clinical trials. Institute Pasteur du Cambodge, Institute Pasteur in Cambodia was a key institution involved in the public health response during the COVID-19 pandemic in Cambodia, as well as conducting research into SARS-CoV-2. Pasteur Institute of Dakar were also involved in COVID-19 pandemic in Senegal, Senegal's health response.


Accomplishments of the Institute's members


Roux's cure of diphtheria and studies on syphilis

Not long after the institute's inauguration, Roux, now less occupied in the fight against rabies, resumed in a new lab and with the help of a new colleague, Alexandre Yersin, Yersin, his experiments on diphtheria. This disease used to kill thousands of children every year: an associated condition was commonly called croup, which created fake membranes in the patients' throats, therefore killing them by suffocation. It was called "Horrible monster, sparrowhawk of the shadows" by Victor Hugo in his ''Art of being a grandfather''. The painter Albert Gustaf Aristides Edelfelt made a painting portraying Pasteur in his laboratory while he was trying to cure this illness. Roux and Yersin grew the bacillus that causes it and studied, thanks to various experiments they did on rabbits, its pathogenic power and symptoms, like the paralysis of the Muscles of respiration, respiratory muscles. It is this last consequence of diphtheria that provided the two researchers with a clue to the nature of the disease since it is caused by an intoxication due to a toxin introduced into the organism by the bacillus, that while secreting this particular venom is able to multiply itself: they were therefore inclined to think that the bacillus owed its virulence to the toxin. After filtrating the microbial culture of the ''
Corynebacterium diphtheriae ''Corynebacterium diphtheriae'' is a Gram-positive pathogenic bacterium that causes diphtheria. It is also known as the Klebs–Löffler bacillus because it was discovered in 1884 by German bacteriologists Edwin Klebs (1834–1912) and Friedrich ...
'' and injecting it into the lab animals, they were able to observe all the typical signs of the sickness. Roux and Yersin established that they were dealing with a new type of bacillus, not only able to proliferate and abundantly reproduce itself, but also capable of spreading at the same time a powerful venom, and they deduced that it can play the role of antigen, that is if they could overcome the delicate moment of its injection, made especially dangerous by the toxin. Some German researchers had also discovered the diphtheria toxin and were trying to immunize some guinea pigs through the use of a vaccine: one of them, Von Behring, Robert Koch's student, stated that he was able to weaken small doses of the toxin. Nonetheless, Roux was not convinced by this result, since no one knew the collateral effects of the procedure, and preferred to use serotherapy since more than one lab study – like the one accomplished by Charles Richet – demonstrated that the serum of an animal vaccinated against the disease included the antibodies needed to defeat it. The anti-diphtheria serum which was able to agglutinate the bacteria and neutralize the toxin was supplied by a horse inoculated with the viral germs, and it was separated from the blood drawn from the horses' jugular vein. Roux needed to test the effectiveness of the product he elaborated on To test the serum, two groups of children were chosen from two different hospitals: in the first one, which received the serum, 338 out of 449 children survived, in the latter one, treated with the customary therapies, only 204 out of 520 survived. Once the results were made public by Le Figaro newspaper, a subscription fund was opened to raise the money needed to provide the Institute with the number of horses necessary to produce enough serum to satisfy the national demand. After Duclaux's death, Roux took his place as head of the institute, and the last research he carried out was the one on syphilis, a dangerous disease because of its immediate effects and the hereditary repercussions that result from it. Despite Jean Alfred Fournier, Fournier's considerable work, Gerard van Swieten, van Swieten's liquid mercury was still the only known cure, although its results were doubtful and uncertain. The search for a stronger remedy against this disease was made more difficult because most animals are immune to it: it was thus not possible to experiment with possible cures and study their likely side effects. The sexually transmittable ''Treponema pallidum'' (the syphilis germ), detected by two German biologists, Fritz Schaudinn, Schaudinn and Erich Hoffmann, Hoffmann, affects only the human racewhere it resides in sperm, ulceration, and cancers that it is able to causeand, as it would later be discovered, some anthropoid apes, especially chimpanzees. Both Roux and Metchnikoff, following the discovery that this type of ape can be contaminated with the illness, contributed with their research in creating a vaccine, while Jules Bordet, Bordet and August von Wassermann, Wassermann elaborated a solution that was able to expose the germ's presence in human blood. Even though it was not yet a completely reliable solution, it represented progress compared to the previous medicines used against syphilis.


Metchnikoff's phagocytosis theory

Ilya Ilyich Mechnikov Ilya, Iliya, Ilia, Ilja, Ilija, or Illia ( , or ; ; ) is the East Slavic form of the male Hebrew name Eliyahu (Eliahu), meaning "My God is Yahu/ Jah." It comes from the Byzantine Greek pronunciation of the vocative (Ilía) of the Greek Eli ...
had already published the "principle of immunization" during his voluntary exile in Italy, where he went to undertake some studies, the results of which he had promptly communicated to Pasteur. The phagocytosis theory is based on the notion that phagocytes are cells that have the power to englobe foreign bodies – and above all bacteria – introduced inside an organism. German biologists opposed to his doctrine the humoral theory: they claimed to have found in Roux's serum some substances able to reveal the presence of microbes, and to ensure their destruction if properly stimulated. The German scientist Eduard Buchner referred to these substances as "alexine" and two other biologists, Von Behring and Kitasato demonstrated their lytic power towards bacteria. In 1894 one of these scientists published the result of an experiment that appeared to refute Metchnikoff's ideas: using the cholera vibrio, discovered ten years before by Robert Koch, as an antigen, Richard F. J. Pfeiffer introduced it in the abdomen of a guinea pig already vaccinated against this disease, and was able to observe the destruction of the vibrio in the local blood plasma, without the participation of the phagocytes. Not even this study was able to shake Metchnikoff's belief and faith in his theory, and his ideas, as well as Pfeiffer's and Buchner's, would all contribute to the elaboration of the current theory of the immune system.


Yersin's studies on the plague

Yersin, after his research with Roux, abruptly left the Institute for personal reasons. The news of a violent plague outburst in Yunman enabled Yersin to show his potential as he was summoned, as Pasteur's scholar, to conduct microbiological research of the disease. The plague he had to deal with was the
bubonic plague Bubonic plague is one of three types of Plague (disease), plague caused by the Bacteria, bacterium ''Yersinia pestis''. One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and ...
, which is recognizable most of the time through the abscesses, known as buboes, it provokes in its victims. Yersin looked for the germ responsible for the infection specifically in these plague spots, tumors caused by the inflammation of the lymphatic glands which become black because of the necrosis of the tissue. After many microscopic exams he was able to state that in most of the cases the bubonic plague bacterium was located in these buboes; but in the meanwhile, the Japanese scientist Kitasato also declared that he had isolated the bacterium, even though the description he provided differed from the one given by Yersin. Therefore, although at first named "Kitasato-Yersin bacillus" by the scientific community, the microbe would later be called by the latter's name because the one identified by Kitasato, a type of streptococcus, cannot be found in the lymphatic glands. However it was
Paul-Louis Simond Paul-Louis Simond (30 July 1858 – 3 March 1947) was a French physician, chief medical officer and biologist whose major contribution to science was his demonstration that the intermediates in the transmission of bubonic plague from rats to ...
who was the first to understand and describe the etiology of the plague and its modality of contamination: he observed small flea-bites on the bodies of the people affected by it, which he also found on the bodies of the dead rats that were linked to the plague, and then deduced that the fleas which carried the bacteria were its true vector (epidemiology), vector or source, and that they transmitted the illness by jumping from the dead rats' bodies to the human ones and biting them.


Calmette's and Guerin's anti-tuberculosis vaccine

By the beginning of the 20th century, improvement of living conditions and development of a more extensive conception of hygiene produced a slight regression in tuberculosis cases in France: nonetheless the institute's labs, like many other ones, kept trying to find among the Koch's bacillus many singularities the one that would allow them to find an antidote. Right after he had discovered the bacillus, Koch had tried in vain to create a vaccine against it, however, the injection of the filtrate he had prepared, later called tuberculin, had the effect of revealing who was phthisic from who was not by causing in the latter—and not in the former—fever and light trembling. The institute's newspaper was filled at the time with articles regarding tuberculosis, some of which were written by
Albert Calmette Léon Charles Albert Calmette ForMemRS (; 12 July 1863 – 29 October 1933) was a French physician, bacteriologist and immunologist, and an important officer of the Pasteur Institute. He co-discovered the Bacillus Calmette-Guérin, an attenuat ...
, who extended his research to a socio-professional category which was extremely affected by it, that is the miners in whom this disease is often anticipated or accompanied by silicosis and anchylostomiasis (caused by a small intestinal worm that creates a state of anemia propitious to tuberculosis). After finding a better solution to anchylostomiasis, he focused on creating a vaccine using the bacillus responsible for bovine tuberculosis, very similar to the human one, as it caused almost the same symptoms. Having observed that most actinomycetales are saprophytes, that are able to survive outside of living organisms, with the help of a veterinarian, Camille Guerin, he attempted to create an environment for the bacillus that, in time, altered its features by eliminating the virulence and leaving only the antigenic power. The environment deemed appropriate for the Denaturation (biochemistry), denaturation of the Mycobacterium bovis was a compost of potatoes cooked in the bile of an ox treated with Glycerol, glycerine, and Calmette re-inseminated it every three weeks for thirteen years while checking for an enfeeblement of the pathogenic power of the bacillus. Having finally lost completely its virulence, the bovine tuberculosis germ grown with their method was the principal Preventive healthcare, prophylactic weapon against human tuberculosis, and it helped to reduce considerably the frequency of this disease. While experimenting on chimpanzees in Kindia, Calmette also discovered that it can notably weaken some leprosy manifestationsits bacillus presents some similarities with Koch's.


Calmette's work in Saigon

In Saigon
Albert Calmette Léon Charles Albert Calmette ForMemRS (; 12 July 1863 – 29 October 1933) was a French physician, bacteriologist and immunologist, and an important officer of the Pasteur Institute. He co-discovered the Bacillus Calmette-Guérin, an attenuat ...
also created the first overseas branch of the institute, where he produced an amount of smallpox and rabies vaccines sufficient to satisfy the needs of the population and started a study on venomous snakes, particularly cobras. During these studies, Calmette discovered that the power of the venom, as well as that of
tetanus Tetanus (), also known as lockjaw, is a bacterial infection caused by ''Clostridium tetani'' and characterized by muscle spasms. In the most common type, the spasms begin in the jaw and then progress to the rest of the body. Each spasm usually l ...
, could be countered by the use of alkaline hypochlorites, and was able therefore to create a serum, effective if injected right after the cobra's bite. Back in France, he acquired enough snakes to continue his work and create a serum for the local population.


Nicolle's work on epidemic typhus

The scientist and writer
Charles Nicolle Charles Jules Henri Nicolle (21 September 1866 – 28 February 1936) was a French bacteriologist who received the Nobel Prize in Medicine for his identification of lice as the transmitter of epidemic typhus. Family Nicolle was born to Aline Lo ...
while in Tunis studied how epidemic
typhus Typhus, also known as typhus fever, is a group of infectious diseases that include epidemic typhus, scrub typhus, and murine typhus. Common symptoms include fever, headache, and a rash. Typically these begin one to two weeks after exposu ...
– known for the red spots it left on sick people that disappeared before their death – was transmitted. His insight into the mode of transmission occurred while he was visiting the hospital: patients were washed and given clean clothes on admission, and no new cases occurred within the hospital. This made him realise that the vector of the disease were lice that were discarded with the patient's own clothes. Nicolle managed to attract Hélène Sparrow to be Laboratory Chief in Tunis. She had worked with Rudolf Weigl who had developed a vaccine, and she was able to introduce this to Tunisia as the start of a public health programme to control the disease. Nevertheless, three other scientists also identified the bacterium responsible for the disease: Howard Taylor Ricketts, Ricketts, Russell Morse Wilder (1885–1959), and Stanislaus von Prowazek, Prowazek, who called it ''Rickettsia prowazekii''.


Chantemesse's typhoid vaccine

During the summer of 1900, the extremely hot weather and scarcity of the water supply in Paris, usually ensured by the Ourcq channel and by the de la Dhuis aqueduct, forced the authorities to pump water directly from the Seine, which, despite filtering, led to a sudden and alarming outbreak of typhoid cases in
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
. The cause of the disease, a bacillus that was discovered almost twenty years before by the German bacteriologist Karl Joseph Eberth and that looks like a bodiless spider, was constantly present in this river and not even pouring extensive quantities of ozone and of lime permanganate into its water was enough to exterminate the bacteria. The difficulty in creating a vaccine is caused by the nature of the germ's endotoxins. Unlike diphtheria, which releases toxins via exocytotic secretion, typhoid pathogens encapsulate endotoxins that survive even after the death of the bacillus. After working in the rabies division of Rue Vaquelin and studying the microbe that causes dysentery, André Chantemesse collaborated with a younger bacteriologist, Georges-Fernand Widal. Together they were able to immunize guinea pigs by inoculating them with heat-treated dead bacteria, calling into question the notion that only weakened, not dead, bacteria can be used to immunize. They concluded that a series of three or four early injections of such heat-inactivated bacteria can effectively inoculate against the development of the disease, as the endotoxins alone are sufficient to trigger the production of antibodies.


Fourneau and the Laboratory of Medicinal Chemistry

Regarding curative medicine, it was in 1911 that it took off at the Institut Pasteur, when Ernest Fourneau created the Laboratory of Medicinal Chemistry, which he directed until 1944, and from which emerged numerous drugs, among which one can mention the first Valence (chemistry), pentavalent arsenical treatment (Acetarsol, Stovarsol), the first synthetic Alpha blocker, alpha-adrenoreceptor antagonist (Prosympal), the first antihistamine (Piperoxan), the first active drug on heart rate (Dacorene) or the first synthetic Neuromuscular-blocking drug, no-depolarising muscle relaxant (Gallamine triethiodide, Flaxedil). The discovery of the therapeutic properties of sulfanilamide by Tréfouël, Nitti and Bovet, in the laboratory of Fourneau, paved the way for the Sulfonamide (medicine), sulfamidotherapy.


The Hospital Pasteur

The Hospital Pasteur was built during the first years of the 20th century in front of the institute and was employed for a long time by the members as a field for clinical observation and experimentations of therapeutical processes elaborated by themselves. Since in the beginning it was provided with only 120 beds, every patient was so well isolated in his private room that each room could be almost considered a small pest house, ideal for quarantine. The construction of the hospital was enabled by the gift of a benefactor, Madame Lebaudy, while money offered by the baroness Hirsch was used to build a large pavilion that accommodated the Department of Chemical Biology of the institute.


Duclaux work in the chemical biology department

The work done in the new pavilion by Duclaux clarified how the human body accomplished some of its vital functions and discovered the role of a diastase. It was critical in resolving a controversy aroused between Pasteur and Marcellin Berthelot, Berthelot after the publication of Claude Bernard's posthumous essay regarding the nature of the agents implicated in some transformations that happen inside plants, like fermentation. While Pasteur believed that the only substance implied in the process of fermentation was yeast, Bernard – and Berthelot in his own way – believed that some other soluble ferment was involved: the German chemist Eduard Buchner later demonstrated the existence of this "ferment", an intracellular diastase which he called "zymase", what we know now as enzymes. Duclaux's study on the metabolism of nutrients did not have immediate practical applications, but later revealed how extensive is the field of enzymes and opened new roads that would lead biology to extend the knowledge on life's mechanisms on a molecular level.


Pasteur's museum and tomb

The Musée Pasteur (Pasteur Museum) is located in the south wing of the first building occupied by the Institut Pasteur, which was inaugurated on 14 November 1888. Established in 1936, this museum preserves the memory of Louis Pasteur's life and work in the vast apartment where he lived during the last seven years of his life, from 1888 to 1895. This museum also includes the collection of scientific objects illustrating the scientist's work, as well as the Neo-Byzantine funeral chapel where Pasteur is buried.


The Pasteur Network

Often confused with the Pasteur Institute (in Paris), the Pasteur Network is an alliance of 32 institutes worldwide, of which the Pasteur Institute in Paris is a member. It brings together more than 100 research units and close to 2,700 people, including 500 permanent scientists and another 600 scientists visiting from 70 countries annually. The Institut Pasteur is also a global network of 33 foreign institutes devoted to medical problems in developing countries; a graduate study center and an epidemiological screening unit. The international network is present in the following cities and countries:


Research centers

As of 2008, the Institut Pasteur has eleven major research departments: * Cell Biology and Infection, * Developmental Biology, * Genomes and Genetics, * Immunology, * Infection and Epidemiology, * Microbiology, * Neuroscience, * Parasitology and Mycology, * Structural Biology and Chemistry, * Virology, * Computational Biology There are also non-research departments devoted to records and archives maintenance, maintenance of historical micro-organism cultures, publications, and the library. In addition to the isolation of HIV-1 and HIV-2, in the recent past researchers at the Institut Pasteur have developed a test for the early detection of colon cancer, produced a genetic engineering, genetically engineered vaccine against hepatitis B and a rapid diagnostic test for the detection of the ''Helicobacter pylori'' bacterium which is implicated in the formation of stomach ulcers. Other research in progress includes the study of cancer and specifically the investigation of the role of oncogenes, the identification of tumor markers for diagnostic tests, and the development of new treatments. One area of particular interest is the study of human papilloma viruses (HPV) and their role in cervical cancers. Researchers are currently focusing on the development of various vaccines against many diseases including AIDS,
malaria Malaria is a Mosquito-borne disease, mosquito-borne infectious disease that affects vertebrates and ''Anopheles'' mosquitoes. Human malaria causes Signs and symptoms, symptoms that typically include fever, Fatigue (medical), fatigue, vomitin ...
, dengue fever and the Shigella bacterium. Currently, an extensive line of research aims at determining the complete genome sequences of several organisms of medical importance, in the hope of finding new therapeutic approaches. The institute has contributed to genome-sequencing projects of the common yeast (''Saccharomyces cerevisiae'', an organism which was so important for Louis Pasteur's history), completed in 1996, ''Bacillus subtilis'' completed in 1997, ''
Mycobacterium tuberculosis ''Mycobacterium tuberculosis'' (M. tb), also known as Koch's bacillus, is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis. First discovered in 1882 by Robert Koch, ''M. tuberculosis'' ha ...
'' completed in 1998.


Teaching center

Since its founding, the Institute Pasteur has brought together scientists from many different disciplines for postgraduate study. Today, approximately 300 graduate students and 500 postdoctoral trainees from close to 40 different countries participate in postgraduate study programs at the institute. They include pharmacists and veterinarians, as well as doctors, chemists, and other scientists.


Epidemiological reference center

Strains of bacteria and viruses from many different countries are sent to the institute's reference center for identification. In addition to maintaining this vital epidemiological resource, the Institute serves as an advisor to the French government and the World Health Organization (WHO) of the United Nations. Pasteur scientists also help to monitor epidemics and control outbreaks of infectious diseases throughout the world. These activities have created a close collaboration between the Institute and the U.S. Centers for Disease Control and Prevention (CDC).


Vaccines and diagnostic products

Production and marketing of diagnostic tests developed in the Institute laboratories are the responsibility of ''Sanofi Diagnostics Pasteur'', a subsidiary of the French pharmaceutical firm Sanofi, while production and marketing of vaccines are the responsibility of Pasteur Mérieux, Sérums et Vaccins.


Structure and support

As a private, non-profit organization, the Institut Pasteur is governed by an independent board of directors, currently chaired by François Ailleret. The director-general is Stewart Cole. By drawing financial support from many different sources, the institute protects its autonomy and guarantees the independence of its scientists. The institute's funding includes French government subsidies, consulting fees, licensing royalties, contract revenue, and private contributions.


In popular culture

The book ''The Paris Option'' by Robert Ludlum and Gayle Lynds begins with four men blowing up the Institut Pasteur, as a cover for stealing a molecular computer project being done there.


References


Bibliography

* Gascar, Pierre. ''La Strada di Pasteur'', Jaca Book, Milano 1991. . * Hage, Jerald and Jonathon Mote. "Transformational Organizations and a Burst of Scientific Breakthroughs," ''Social Science History'' (2010) 34#1 pp 13–46
online
* Reynolds, Moira Davison. ''How Pasteur Changed History: The Story of Louis Pasteur and the Institut Pasteur'' (1994) * Seidel, Atherton. "Chemical research at the Institut Pasteur," ''Journal of Chemical Education,'' (1926) 3#11, p 1217+ DOI: 10.1021/ed003p1217 * Weindling, Paul. "Scientific elites and laboratory organization in fin de siècle Paris and Berlin: The Institut Pasteur and Robert Koch's Institute for Infectious Diseases compared," in Andrew Cunningham and Perry Williams, eds. ''The Laboratory Revolution in Medicine'' (Cambridge University Press, 1992) pp: 170–88.


External links

*
Monod, J.: The Institut Pasteur
The Nobel Foundation.

* [http://gallica.bnf.fr/ark:/12148/cb34348753q/date ''Annales de l'Institut Pasteur''] in Gallica, the digital library of the BnF


Sources


The History of Institut Pasteur

Fondation Mérieux
* {{Authority control Pasteur Institute, Medical research institutes in France Louis Pasteur, Institut pasteur Research institutes established in 1887 Microbiology institutes Organizations based in Paris Buildings and structures in the 15th arrondissement of Paris 1887 establishments in France 1887 in biology Virology institutes COVID-19 pandemic in France