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News | 2025.09.12
Plague in Madagascar: a new model sheds light on the seasonality of outbreaks
A new model has been developed to elucidate the seasonal dynamics of plague in Madagascar. In this country, where the disease remains endemic, and most often occurs between October and March. The associated study, which arose from a collaboration between the Institut Pasteur in Paris and the Institut Pasteur de Madagascar, paves the way for more effective eradication and prevention...
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Vidéo | 2025.09.15
The plague in Madagascar
What if the plague had never disappeared?Antoine Brault, a researcher at the Institut Pasteur, explains how his team is tracking rats and fleas in Madagascar to understand why plague epidemics are still reappearing today.Using a supercomputer, they have shown that from September onwards, the number of fleas explodes, increasing the risk of an epidemic—even when the rat population is declining. ...
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News | 2025.09.15
The Institut Pasteur opens its doors for the 2025 European Heritage Days
To mark the 42nd European Heritage Days, this year on the theme of "Architectural Heritage", the Institut Pasteur is opening its doors on Saturday and Sunday September 20 and 21, from 2 to 6pm.
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News | 2025.04.22
Tecovirimat is an effective treatment for mpox, in cells culture
The antiviral drug tecovirimat is frequently used to treat mpox. But is it really effective, especially against the new, more pathogenic strain of the virus that has been in circulation since 2024? A study by the Institut Pasteur, recently published in The Lancet Infectious Diseases (1), concludes that it is.
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Fiche maladie | 2019.10.16
Chikungunya
Chikungunya is a viral disease transmitted to humans by the bite of Aedes albopictus and Aedes aegypti mosquitoes. Although rarely fatal, chikungunya can cause significant pain and debilitating symptoms that affect patients' quality of life. Existing treatments are solely symptomatic. In France, the current conditions in 80% of départements are conducive to the emergence of chikungunya.
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Document de presse | 2025.09.19
Consumption of food additives during pregnancy: effects on offspring microbiota increase susceptibility to inflammatory diseases
A study conducted in mice by scientists from the Institut Pasteur and Inserm reveals that maternal consumption of dietary emulsifiers can have a negative impact on the gut microbiota of their offspring. These microbiota alterations are thought to significantly increase their risk of developing chronic inflammatory gut disorders and obesity in adulthood. The harmful transgenerational effects of...
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Événement | 2025.10.08
Open House at the Institut Pasteur, on October 8
On October 8, 2025, the Institut Pasteur will open the doors of its campus in Paris, as part of its annual fundraising event called Pasteurdon. Lab tours, hands-on workshops, storytelling walks, and more (all in French). A day designed for children from 5 to 11 and their families. Free – registration required – limited admissions.
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Vidéo | 2025.09.23
Leprosy: revelation
What if the history of leprosy had to be rewritten?Nicolás Rascovan, a researcher at the Institut Pasteur, reveals a discovery that challenges everything we thought we knew:In America, Mycobacterium lepromatosis, a bacterium responsible for leprosy, was already circulating more than 1,000 years ago... long before the arrival of Europeans.Ancient DNA analyses, conducted on human remains from...
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Fiche maladie | 2023.09.15
Legionellosis
Legionellosis is a collective term for diseases caused by Legionella bacteria, including the potentially fatal Legionnaires' disease. The most common species, Legionella pneumophila, causes a severe lung infection. The recent emergence of the disease can be explained by the affinity of Legionella bacteria for modern water supply systems. Although there is no vaccine for Legionnaires' disease, it...
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Fiche maladie | 2017.09.28
Tuberculosis
Tuberculosis (TB) is an infectious disease that generally affects the lungs, caused by the Mycobacterium tuberculosis bacterium. It is highly contagious and is spread through the air when infected people cough or sneeze. Although tuberculosis can be fatal, it is often treatable and can be prevented if diagnosed and treated correctly.
