Pasteur Foundation · Major Donor Society

Join Le Cercle de Pasteur — Transform Science Through Giving

Your gift powers discovery and global health solutions

Every breakthrough at the Institut Pasteur begins with a question: how can we better prevent and treat disease to improve lives around the world? Members of Le Cercle de Pasteur make these questions possible to answer — at the highest level of scientific ambition.

Choose Your Membership Level

Annual

Multiyear pledge

$100,000

$100,000

$100,000

$100,000

$100,000

$100,000

$ Other Amount

USD

Our Mission

Advance Scientific
Research

We provide critical funding for cutting-edge projects that push the boundaries of what is possible in medicine and global health.

Support Emerging
Scientists

Our fellowship programs empower the next generation of researchers to continue Louis Pasteur's legacy of curiosity, discovery, and innovation.

Promote Global
Health Equity

By translating research into action, we help bring lifesaving treatments and tools to the communities that need them most.

About the Circle

Science as a calling. Philanthropy as an act of civilization.

Le Cercle de Pasteur is the major donor program of the Pasteur Foundation — the American nonprofit that channels philanthropic investment to the Institut Pasteur in Paris, one of the world’s foremost biomedical research institutions, founded in 1888.
Founded by Louis Pasteur himself, the Institut has produced ten Nobel laureates and pioneered discoveries that have transformed the course of human health — from the germ theory of disease and the development of vaccines to the discovery of HIV and the ongoing fight against emerging infectious diseases.
Members of Le Cercle join a tradition of patrons who understand that the greatest breakthroughs begin not with government mandates, but with private courage and generosity. Your gift makes possible the science the world needs most. All gifts are tax-deductible to the extent permitted by law.

Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world

— Louis Pasteur

Membership tiers

Benefits by level

ENTRY

Ami de Pasteur

$1,000–$4,999 annually

ASSOCIATE

Associé de Pasteur

$5,000–$14,999 annually

SIGNATURE LEVEL

Bienfaiteur

$15,000–$49,999 annually

PATRON

Mécène de Pasteur

$50,000–$99,999 annually

FOUNDING

Fondateur

$100,000+ annually

Bienfaiteur level and above

The signature donor journey

Day 1

Paris: The Living Laboratory

15th arrondissement

Morning

Private welcome at Institut Pasteur

Exclusive behind-the-scenes access to active laboratories, with a presentation on current flagship programs in infectious disease, immunology, and neuroscience, led by a senior researcher.

MIDDAY

Pasteur Museum: the apartment and crypt

A private after-hours visit to Pasteur’s own apartment, preserved exactly as it was in 1895, accompanied by the museum curator. Includes the Byzantine-style crypt where Pasteur and his wife Marie are buried

EVENING

Welcome dinner at the Académie des Sciences

A private dinner reception in the historic salons of the Institut de France, where Pasteur delivered some of his most celebrated lectures. Guest of honor: a member of Institut Pasteur scientific leadership.

Day 2

Into the Jura: The Landscape of Discovery

TGV Paris → Arbois, Jura

Morning

TGV to Franche-Comté

A scenic two-hour high-speed train journey to the Jura, with an onboard briefing on Pasteur’s relationship to his native region and the terroir that shaped his curiosity about fermentation and living organisms.Exclusive behind-the-scenes access to active laboratories, with a presentation on current flagship programs in infectious disease, immunology, and neuroscience, led by a senior researcher.

Afternoon

Maison de Louis Pasteur, Arbois

A private after-hours visit to Pasteur’s own apartment, preserved exactly as it was in 1895, accompanied by the museum curator. Includes the Byzantine-style crypt where Pasteur and his wife Marie are buried.

EVENING

Welcome dinner at the Académie des Sciences

A private dinner reception in the historic salons of the Institut de France, where Pasteur delivered some of his most celebrated lectures. Guest of honor: a member of Institut Pasteur scientific leadership.

Day 3

Dole: Where It All Began

Dole, Jura

Morning

TGV to Franche-Comté

A scenic two-hour high-speed train journey to the Jura, with an onboard briefing on Pasteur’s relationship to his native region and the terroir that shaped his curiosity about fermentation and living organisms.

Afternoon

Maison de Louis Pasteur, Arbois

A private after-hours visit to Pasteur’s own apartment, preserved exactly as it was in 1895, accompanied by the museum curator. Includes the Byzantine-style crypt where Pasteur and his wife Marie are buried.

EVENING

Gala farewell dinner

A celebratory dinner at a Michelin-recognized restaurant in the region, with remarks from the Pasteur Foundation President and a senior Institut Pasteur scientist on the transformative research donors are making possible.

Day 4

Return to Paris: Optional Cultural Day

Paris

Optional

Private museum tour

An exclusive after-hours or pre-opening guided visit to the Musée d’Orsay or the Louvre, arranged by the Pasteur Foundation — a reminder that the France Pasteur loved was a nation of art as well as science.

Optional

Farewell lunch

A final lunch at a restaurant connected to Paris’s Belle Époque intellectual life — the era of Pasteur’s greatest fame — before departing for the airport.

JOIN THE CIRCLE

Become a member of Le Cercle de Pasteur

For more information about membership, to discuss a gift at any level, or to reserve your place on the next signature donor journey to France, please contact the Pasteur Foundation directly.