Dear Colleagues,
On behalf of the International Society for Infectious Diseases (ISID), it is our distinct honor to invite you to the 21st International Congress on Infectious Diseases (ICID 2026), which will be held in the vibrant city of Madrid, Spain, from November 10–13, 2026.
Since its inception more than two decades ago, the ICID has served as a globally recognized platform for advancing science, clinical practice, and public health policy in the field of infectious diseases. Each congress has marked new milestones, whether unveiling pivotal research outcomes, informing pandemic preparedness, or fostering the next generation of leaders in global health. Building on this legacy, ICID 2026 promises to be a landmark event that both reflects on transformative progress and looks ahead to emerging challenges.
The scientific program will feature plenary lectures from internationally renowned experts, in-depth symposia, interactive workshops, and state-of-the-art poster sessions, designed to highlight the latest breakthroughs in microbial pathogenesis, vaccine development, antimicrobial resistance, zoonotic and emerging infections, digital health innovations, and strategies to advance health equity worldwide. By convening scientists, clinicians, epidemiologists, policymakers, and community stakeholders, ICID 2026 aims to catalyze collaborations that translate discoveries into actionable solutions for global health.
Madrid, renowned for its rich cultural heritage, intellectual vitality, and history of scientific exchange, offers an inspiring setting for dialogue and discovery. Beyond the Congress halls, we encourage you to experience the city’s vibrant spirit, which mirrors the diversity and energy of our global infectious diseases community.
Whether you are a seasoned investigator, a public health leader, a veterinarian, an industry partner, or an early-career professional, ICID 2026 offers unique opportunities to share knowledge, build partnerships, and shape the trajectory of infectious disease prevention and care in the decades to come.
We look forward with great anticipation to welcoming you to Madrid for what promises to be an unforgettable and transformative gathering of the infectious disease community.
With warm regards,
Dr Sally Roberts
President, ISID