
On May 25, 2025, the Oswaldo Cruz Institute (IOC/Fiocruz) completes 125 years of service in favor of science, health and the life of every Brazilian man and woman.
From the production of serum and vaccine to combat the bubonic plague to genomic surveillance studies of the SARS-CoV-2 virus, since its founding in 1900, the trajectory of IOC stands out for its distinct contributions to responses to public health emergencies.