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News | 2026.05.05
Chikungunya, dengue, Zika – what are the risks in mainland France?
In 2025, more than 830 people who had not traveled to tropical regions were infected with chikungunya or dengue in mainland France. The number of locally acquired cases is rising each year, and the tiger mosquito is to blame – as Louis Lambrechts, Head of the Institut Pasteur's Insect-Virus Interactions Unit, explains.
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Article | 2025.05.16
EURL-PH-ERZV - Zoonotic and Emerging Viruses
Member of the Consortium of EU Public Health Reference Laboratories for emerging, rodent-borne and zoonotic viral pathogens (EURL-PH-ERZV)
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Article | 2026.04.09
EURL-PH-DIPE
Institut Pasteur is a member of the European Reference laboratory for Public Health on Diphtheria and Pertussis (EURL-PH-DIPE) Consortium.
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Portrait | 2024.05.21
Philippe Bousso: harnessing immune responses to combat cancer
Philippe Bousso, an immunologist and technophile with insatiable curiosity, is constantly tackling new challenges in his efforts to combat cancer. Like the characters in the sci-fi film Fantastic Voyage, he and his team use cutting-edge in vivo technologies to observe the ways in which the immune system wages war on cancer cells. For Philippe, creativity and innovation pave the way for new...
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News | 2026.05.07
Bacteria Have Millions of Secret Weapons Against Viruses
Millions of new proteins with predicted roles in defence against viruses have been identified in bacteria. It was thought that around 0.5% of the average bacterial genome had some involvement in immunity, but the real figure could be around 3 times higher! This discovery has been made by a team at the Institut Pasteur (Paris) who developed a package of AI tools to search for previously...
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Fiche maladie | 2023.11.27
Dengue
Dengue, also known as ‘tropical flu’, is an infectious disease caused by the virus of the same name. The virus is transmitted by mosquitoes of the genus Aedes. The incidence of dengue is rising rapidly and it is currently considered a ‘re-emerging’ disease.
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News | 2026.05.12
Mosquitoes: unlocking the black box of virus transmission
In 2025, several early-career scientists were selected to lead new research groups at the Institut Pasteur, and Sarah Merkling was one of them. She has led the Insect Infection and Immunity five-year group (G5) since January 2026.
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Portrait | 2026.05.11
Cassandra Koh: One mosquito, billions of viruses – a daunting task
She spent her childhood on the island of Borneo, completed her PhD in Australia and arrived in Paris without speaking a word of French. Cassandra Koh, a virologist at the Institut Pasteur, has got mosquitoes under her skin – scientifically speaking.As a specialist in the mosquito virome, she is exploring largely uncharted territory, namely the billions of viruses hosted by these insects, with the...
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News | 2026.05.19
From the patient's bedside to the laboratory: the academic journey of Marie Robert
It all begins with a question asked at a patient's bedside. How do you tell apart two diseases that look alike, yet require radically different treatments?It is this question, born from clinical practice, that led Marie Robert from the corridors of Hôpital Bichat to the laboratories of Institut Pasteur. A academic journey that the physician-scientist shared with Baptiste Arnaud, doctoral student...
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Report | 2026.05.19
The invisible assassin
They weigh less than a milligram and are no more than a few millimeters long, yet they are single-handedly redrawing the map of infectious disease in France. Insects like mosquitoes and sandflies, and mites such as ticks, all spread infectious diseases that were once thought of as "exotic" because they could only be caught in far-flung destinations or were specifically associated with outdoor...
