The Institut Pasteur and UCSF-QBI celebrated an ongoing successful scientific collaboration today, which was initiated in March 2019, and expanded significantly during the pandemic. This alliance, formalized in October 2022, aimed at bolstering the fight against infectious diseases, has already spawned more than 20 research projects, a dozen publications in high-level journals, and numerous scientific exchanges. This initiative now includes the Gladstone Institute of Virology and is preparing to expand its impact globally through the Pasteur-UCSF-Gladstone Center.